Welcome to Your Personalized Fitness Journey
You are unique, and so should be your fitness journey. I'm here to help you achieve your goals through the most personalized training experience possible. Fitness is more than just workouts—it's about what you do, what you eat, how you feel, and how you sleep. Together, we will focus on all aspects of your health and lifestyle. Having faced my own challenges, I bring a raw grit and humor to teaching others how to stay positive and energetic through life's curveballs. As a mother, wife to a USMC veteran, business owner, and project manager, I understand the demands of a busy life. Yet, I still find time for myself and my body—and so can you. I'll show you how to save time while losing fat, building muscle, and balancing work, children, and relationships. Whether you're at home, in the gym, or on the road, I’ll be part of your fitness journey. I'll guide you through tough times, check your form on video calls, celebrate your wins, and adapt to your schedule changes. Let's embark on this journey together and transform your life in the most fulfilling way possible.
Personal Trainer in Your Pocket!
Personalized Schedule
Transform your mind and body with a customized training program designed specifically for you to achieve your goals. Your personalized schedule will include workouts based on your program selection, custom meal plans (macros provided), macro counter, food bar-code scanner, water tracker and so much more! Hit the GET STARTED button below to check out my programs.
Progress Tracking
Connect your favorite wearable device to my app, and never lose track of your progress. Track your fitness journey like a pro. Get closer to your fitness goals with easy performance tracking of your steps, heart rate, and more PLUS weekly progress photos and intelligent analytics that you can see at any time.
Dynamic Workout Routines
Workouts designed by Chels for hardworking people that are ready to save time and money when it comes to their healthy lifestyle. Enjoy workouts you can choose from all fitness levels, gym or at-home workouts and even workouts you can choose based on your time you have to train (under 30 minutes, 60 mins, 90 mins, etc.). The MamaRillas Program has a full monthly workout schedule that drops every month that you can set your plan to follow along, taking all the prepping and planning out of the process, just grab your phone and follow along.
Chat With Your Trainer 24/7
Stay connected with me in real-time with messages and video calls** With photo, audio, video and document and voice sharing supported right in the app, connect with me, get motivational messages and ask all your juicy questions. **Video calls subject to only specific coaching programs**
Success Stories
Build With Chels Programs
MamaRilla Program
Grow both physically and mentally as a woman, especially working moms and busy professionals, move faster, unleash every tool and resource that helps you learn how to eat properly, be more functional and build muscle at any level.
Workout Routines (Gym & At-Home)
Personalized Meal Guides
Calorie Counter and Macro Tracker
Track your reps, weights and duration while working out
Track your food using our NEW bar-code scanner
Food and restaurant macro library for quick entry
Set body goals and view metrics to see how compliant you are
Track your progress photos, body measurements, weight and muscle mass
Guided recipes and meal plans
Daily water goal set for you with a built-in tracker
In-app chat and support from Chels
Month to month subscription that you can CANCEL ANYTIME
Free
for first week
Gorilla Glutes
Our 16-week booty building fitness program for women is designed to help individuals achieve a stronger, shapelier, and more toned posterior. Your ISSA Certified Elite Trainer, and Glute Specialist, Chelsi Kottwitz, focuses on developing the glute muscles through targeted exercises and a structured block periodization workout regimen plus teaches you how to each specifically for GLUTE GAINS; helping you build healthy, peachy habits. Gorilla Glutes program is a comprehensive and goal-oriented approach to achieving a firmer, more sculpted rear end. This program is specifically designed to help women of all fitness levels improve their glute strength and aesthetics. Program Structure: Weeks 1-4: Building the Foundation - Establishing proper form, glute activation and mobility. Weeks 4-8: Progressive Overload - Increasing the intensity and adding resistance. Weeks 8-12: Glute Shaping - Focusing on muscle definition and sculpting. Weeks 12-16: Perky Performance - Hypertrophy efficiency and aesthetic results.
A 16-week workout plan that can be done at the gym or home (if you are completing the home version, you will at least need a resistance looped band and a booty band, and/or a Kettlebell, Pair of Dumbbells and/or a Barbell), this will include 3 days of training the lower body.
Macro-goal based meal guide
Each exercise is equipped with a video example
Full access to the Build With Chels app
Calorie Counter + Food Library
Food & Water Tracker
Workout Log + Complete Progress Analysis
24/7 in-app chat with your trainer, Chelsi Kottwitz
Email support from Chels, who will guide you throughout the 16 weeks giving you tools and resources to help you achieve a bigger, stronger, lifted pair of cheeks.
$89
for 16 Weeks
Gorilla Grit Club
Welcome to the Gorilla Grit Club! This all-inclusive program is your golden ticket to a transformative journey that combines the best of fitness and nutrition, bringing together every program offered on our app under one powerful umbrella plus a personalized meal plan. Chelsi Kottwitz, Certified Personal Trainer and Nutritionist will be with you every step of the way-helping you hit your goals in a sustainable manner. Our all-inclusive approach ensures that you have unrestricted access to a variety of workouts, from strength training to high-intensity cardio, coupled with personalized meal guides crafted by your top-notch Nutrition Specialist. It's not just about building a better body; it's about unleashing your inner gorilla – that primal force within each of us that craves strength, confidence, and vitality.
Unlock your full potential with exclusive entry to every fitness and nutrition program available within the Build With Chels App + a custom meal plan to fit your goals and personal schedule.
Ease of switching your regimen up with access to all current and future workout programs under the Build With Chels umbrella included but not limited to: Gorilla Glutes, Silverbacks, Mama Rillas, Bikini Bod, Tight & Tone, Steps 1 and 2
Healthy Recipes and Food Library
Based on your on-boarding questions your we will set you up with the best meal guide and metabolic calorie daily goal
Calorie Counter + Water Tracker
Unlimited in-app messaging with your very own Certified Personal Trainer and Nutritionist to answer all your desired questions
Head to Toe Body Progress Weekly & Monthly Tracker + Analytics
Unlimited access to the Build With Chels Resource Library
2 coaching video calls per month
Free
for first week
Bikini Bod
Are you ready to shed some fat and sculpt your best beach body just in time for Summer or vacation? If you answered YES, then this is the program for you. Bikini Bod is an 8 week intense program to help you shed fat while still building strength and stamina.
8 week structured workout plan (includes individual exercise videos for both gym + home) This will include strength based exercises + cardio
8 week meal guide (includes full app access to food library)
Body Progress Tracker - upload your progress pics weekly, track your reps/weights during your workouts
Food/Water Tracker - add food and drinks to stay on top of your meals during the 8 weeks
Full app access
50% discount on your next program (Post-Bikini Bod, where you learn how to reverse diet and sustain what fat you've lost, strength gained from the Bikini Bod Program) if you complete the BWC accountability weekly standards (this includes uploading a weekly progress pic and 100% consistency of entering in your daily food/water intake)
$45
for 8 Weeks
Silverebacks Program
Finally, a fitness and nutrition program for all the dudes and dads out there. The Silverbacks program compliments the MamaRilla program; making it perfect for couples to dominate their fitness goals together!
Workout routines (Gym & At-Home)
New workouts drop every 4-6 weeks and you never lose access to the prior months so unlimited amount of workouts always!
Track your reps, weights and duration while working out
Get a personalized macro-nutrient and calorie goal set by Chels for you
Food log + Food/Restraurant Library
Healthy Recipes and Meal Guides
Daily water tracker
In-app chat and email support form Chelsi Kottwitz, your Certified Personal Trainer and Nutritionist
Built With Budget Friendly Convenience; Enjoy an Annual Savings or Easy Month to Month Subscription Plan Option That You Can Cancel Anytime
Free
for first week
Online 1:1 Personal Coaching
If you struggle with accountability, have a lengthy goal or looking to educate yourself more in depth of how to elevate your body and mindset with nutrition and training; and want to work more one on one with me, this is the best plan for you.
Weekly Coaching Video Calls with Chels (30 mins per week)
Custom Workout Plan with progressions
Custom Meal Plan with progressions
Full Membership Access to the Build With Chels App
Unlimited messaging with Chels
$275
Monthly
Tight & Tone (STEP 1)
Tight & Tone (Step 1) program is for anyone beginning or freshening up their fitness lifestyle. This program lasts for 8 weeks and if followed faithfully will help reduce the appearance of body fat by tightening up your muscles in your body, giving you a tight and toned appearance. **For greater results I recommend pairing up the Build With Chels meal program**
Build healthy habits throughout the 8 week workout (at-home) schedule. Incorporates body-weight exercises and lightweight loads with mid-high repetition ranges.
Every exercise will be equipped with a video giving you an example of how to move through the exercise so you'll no longer waste time "googling" or wondering if your form is correct.
Become familiar with simple compound moves, a great introduction to bodybuilding and weight-lifting.
Lay the needed groundwork to a sustainable, fit lifestyle.
Includes Macro-based goal (based off your current goal), food library and bar-code scanner for easy calorie counting/macro counting (protein, fat and carbohydrates)
Receive in-app chat access to Chelsi Kottwitz, your Certified Personal Trainer 24/7 throughout the entire duration of the program.
Track your entire fitness progress with tools built in to the Build With Chels app (track your reps, weights daily, progress picture, measurements, water intake and integrate your smart watch or Fitbit to track your heart rate, steps and calories burned).
$45
for 8 Weeks
Tight & Tone, Step 2
Tight & Tone, Step 2 program is for anyone at an intermediate level of gym knowleadge or have successfully completed the Tight & Tone, Step 1 program. This program lasts for 8 weeks, can be done at-home and if followed faithfully will help reduce the appearance of body fat by tightening up your muscles in your body, giving you a tight and toned appearance. **For greater results I recommend pairing up the Build With Chels meal program**
Build healthy habits throughout the 8 week workout (at-home) schedule. Incorporates compound, complex and isolated exercises. Includes mid-low loads with high repetition ranges.
Every exercise will be equipped with a video giving you an example of how to move through the exercise so you'll no longer waste time "googling" or wondering if your form is correct.
Includes Macro-based goal (based off your current goal), food library and bar-code scanner for easy calorie counting/macro counting (protein, fat and carbohydrates)
Receive in-app chat access to Chelsi Kottwitz, your Certified Personal Trainer 24/7 throughout the entire duration of the program.
Track your entire fitness progress with tools built in to the Build With Chels app (track your reps, weights daily, progress picture, measurements, water intake and integrate your smart watch or Fitbit to track your heart rate, steps and calories burned).
$45
for 8 Weeks
MamaRilla Challenge
This challenge is about more than fitness; it's about empowerment, self-discovery, and building a community of like-minded women.
Personalized Workouts: Enjoy daily routines that blend High Intensity Interval Training, Strength, and Flexibility exercises, tailored to all fitness levels.
Nutrition Guidance: Obtain a personalized meal plan that nourishes your body without depriving you.
Mindfulness Practices: This will help reduce your stress, foster mental clarity and resilience.
Supportive Community: Connect with other amazing women through our vibrant online community, sharing stories, tips, and support.
Daily Affirmations: Start each day with unique and powerful affirmations to boost your confidence and positivity.
Goal Setting: Set and track your personal and professional goals, ensuring continuous growth.
Gratitude Journal: Cultivate a strong mindset with daily journaling prompts.
Learning Time: Dedicate time each week to learn something new and expand your knowledge.
$49
/sessionChelsi Kottwitz
ISSA Certified Elite Trainer and Nutritionist
Hey there! I'm Chelsi Kottwitz, an ISSA Certified Elite Personal Trainer, Nutritionist, Bodybuilding Specialist, and the owner of Build With Chels and MamaRilla Sportswear. When I'm not in the gym training clients or behind my laptop cheering on my online fitness community, I love spending time with my husband, Brandon, and my son, Kingston. With a background in sports, including softball, volleyball, dance, and cheerleading, fitness has always been a significant part of my life. At 16, I faced a major car accident that left me with severe injuries, including a broken back, elbow, wrist, knee problems, vertigo, and a concussion. My confidence was shattered, and I was challenged both mentally and physically to recover. Through physical therapy and recovery, I discovered my love for lifting weights. Fast forward about 15 years, and I’m still on my fitness journey, now teaching others how to stay positive and energetic through life's curveballs. Before founding my first business in 2021, I worked as a Finance Manager for a dealership and an Industrial Trades Manager for a staffing company. Building my own business from the ground up, while managing wifey and mama duties, taught me the importance of efficient and timely workouts. I know it’s possible to get and stay in shape as a working mother—if I can do it, so can you! I have all the resources, tips, and tricks to help you get into shape while balancing everything as a mom, wife, and career woman. My goal is to teach my clients how to eat and train sustainably around their busy schedules. I understand that life is full of careers, kids, family, sports, work events, grocery shopping, and daily home tasks. These responsibilities can interfere with your health goals, but my job is to help you incorporate simple habits into your daily routine. By doing so, you won't miss out on the benefits of living a healthy and fulfilling life—and hopefully, we’ll share some laughs along the way. Let's kick ass together and make your fitness goals a reality!
A Complete Transformation In Your Pocket!
Personalized Workouts
Workouts are consistently added to the app and can be personalized to your preferences using our user-friendly exercise swap feature.
Customized Meal Plans
Choose from a variety of easy meal guides or send Chels a chat to get a customized meal plan based on your dietary preferences and physique goals. Your meal plan will then be updated based on your progression.
Compliance Tracking
Build long-term healthy habits by tracking weekly and monthly compliance trends for workouts, nutrition, and more. PLUS, track your workouts logging your weights, sets, reps, rounds, etc.
One-to-One Video Calls
Schedule and connect with your personal trainer over a video call to discuss your goals, progress, techniques and more.
Wearable Integration
Connect your wearable device (such as an Apple Watch or Fit-bit) with the app to track your daily activity levels and workout metrics (like steps, heart rate and calories burned during workouts).
Weekly Check-ins
Track your progress with weekly check-ins that include photos, measurements, sleep and stress ratings, and other health-related metrics (body fat, muscle mass, weight).
Budget Friendly
Enjoy the benefits of a personal trainer without forking out a fortune with budget friendly programs and options.
Chat 24/7 With Chels
Send messages, voice messages and videos straight to your coach when it's convenient for you inside our in-app chat feature.
Client Reviews
This app has everything you could want or need - it’s truly an all in one app. With workouts for home or the gym, plus cardio workouts and so many programs to choose from. Can track your food, water AND progress - IN DETAIL. Plus Chels is THE best to work with - her content is informative and inspiring, and is always responsive to any notes, questions, comments or whether it be about your workouts or additions to the app. I will never use a different app - this one has it all.
32morrrr
Chels is so real and easy to work with you won’t have any issues communicating to her your goals and any struggles you have. The app is super user friendly and I love that she has videos doing the workout with you so you know the best form and you know what the workout is without having to research it. The meal plan is easy to follow and I always loved the food :) definitely recommend!
marcieegee
Amazing! Chels is absolutely amazing and helps you meet the goals you are desiring !! her app is user friendly, and easy to log food and workouts .
JennS
I highly recommend Chelsi! If you are looking to make the change but need help along the way or that extra push, I highly recommend Chelsi. She has helped me so much from making sure my stance is correct, pushing me to make sure I get each rep in, and helping me reach my goal and setting a new one.
CourtneyR.
Best decision I ever made. Signing up with Build With Chels is one of the best decisions I ever made. If you’re like me, and a procrastinator, she will give you that push you need. Not only is she helping me with healthy eating meal plans, and building muscle; she is also helping build my self esteem! She will be your biggest cheerleader every step of the way! For Sure! Highly recommend her! What are you waiting for? Give her a shout!
JenK
Great!! This app is user friendly, so easy to navigate. Has everything you would want, workout, macros, place to store check in pictures to look at before and afters, place to store all measurements, weight. Easy chat screen! Chelsi is very easy and sweet to work with. Answers your questions, never makes you feel like bad for not knowing something. Made me feel good about my journey I started! Highly recommend.
BMart
Frequently Asked Questions
Is the app suitable for beginners?
Yes! Our app has workouts that are offered in a variety of beginner, intermediate and advanced levels.
Are the workouts suitable for home or gym settings?
Yes, there are both home and gym workouts available. We also have our swap-an-exercise feature that allows you to trade out an exercise for another that will still target the muscle group that your trainer has set for you in that specific workout.
How often should I use the app to see results?
We recommend utilizing our app every day to ensure you are building the necessary habits needed to attain a healthy body and mind.
Is the app compatible with my device?
Our app can be downloaded with any device that has Google Play or Apple Store. For a specific device question, please email buildwithchels@gmail.com.
Are there different subscription plans available?
Yes, we have “month to month” or an “annual subscription” plan. The month to month option will pull your subscription amount automatically every 30 days from the time you start it (minus any free trial days). Our annual subscription plan will be a one time amount charged only.
