999 W Main St Suite 100

West Dundee IL 60118

999 W Main St Suite 100 West Dundee IL 60118

The Coach-Led Gym Designed For Rapid Results.


Our sole mission: To transform bodies and lives not just physically- but spiritually, emotionally, and mentally.

Biggest Hurdles:

Accountability

How we can help: Around the clock communication with industry leading trainers. Daily tasks & monthly body scans to track progress.

Life Balance

How we can help: We guide clients towards a realistic balance for a sustainable, healthy lifestyle.

Nutrition

How we can help: We’ll design a plan for you that’s both effective and enjoyable. No more fad diets or sacrifices.

Community

How we can help: Join a supportive community of like-minded individuals working towards their own transformation. 

About SIEFIT

Everything you’ll need to transform, under one roof.

Our transformation program is designed for everyone!  We tailor it to each member. You'll be paired with an expert coach who perfectly matches your style and needs. No matter your age, injury history, goals, fitness level, or experience, you're welcome at SIEFIT

Private Coaching

So we can focus on exactly what you need while keeping a close eye on your progress. Your coach will adjust your program as needed, keeping you in momentum!

Group Workouts

Strength Training, Conditioning, Boxing HIIT, CORE, and more so you can burn a ton of calories each week while never seeing the same workout twice.

Nutrition Plans

Healthy nutrition plans based on the foods you enjoy. We teach you how to balance healthy foods with everyday life so you don’t put weight back on after your “diet” is over.

Goal Setting and Tracking

Monthly goal setting and tracking with our medical-grade Fit-3D Scan to hold you accountable while also knowing exactly what’s happening with your body as it changes.

Specialty Programs

Foudation of Exercise, High-Performance Mindset Coaching, Body Sculpting, Hormone Support, and Advanced Nutrition so you’re equipped with everything you need to finally transform your body and mind for good.

Custom App Programs

So you can workout on vacation or work trips. Your coach may even prescribe homework to be done on your non-training days through our app based on your goals.

What Our Client Says:

"Great atmosphere, great coaches , and great people. My favorite place to work out! Join SIEFIT it has the best thing I’ve done for myself. My gratitude to SIEFIT is immense, and for good reason. The day I became a member of this gym, I had no idea that I was entering a space that would become my happy and favorite place to be. The community is incredible, and the coaches are top-notch. As I reflect on my journey here, I am reminded of the fantastic people I have met, the remarkable progress I have made, and the benefits to my health. Thank you, SIEFIT, for your tireless support and motivation. Happy Thanksgiving to the SIEFIT family."

Ester D

" AMAZING GYM, AMAZING WORKOUTS! Excellent fitness training. Trainers who really care and go above and beyond to help you achieve your goals. A small and private gym that feels more personal. All the fellow members are inspiring. I’ve been going to SIEFIT for a year now and have achieved better results in that time than I have in years at other gyms. WANT A NEW LIFESTYLE CHANGE COME HERE ! ! ! THERE IS NO OTHER PLACE BETTER THEN SIEFIT !! Highly recommended! "

Alondra

" I have been a member of SIEFIT for over a year already. Sierra and her trainers have been the BEST I have ever worked with.. I have always enjoyed fitness and have worked with several personal trainers but this gym has been by far my favorite place and plus the vibes are unmatched anywhere else. This gym delivers RESULTS !! I’m addicted to showing up and continuing my fitness journey!! Thank you SIERRA and coaches (Joe,Zoie and Ale) for always delivering the best workouts and pushing us to the max.. Get your membership now you won’t regret it!!! It’s Worth it! 🙌💪🏼❤️‍🔥 "

Janet


Schedule the perfect day and time to come into the gym. You’ll meet with our program director for a 1 on 1 consultation. We make this super simple, don't sweat it


We’ll learn all about you, and you’ll learn about our us. We’ll discuss the Transformation Program that makes the most sense based on your goals.


Once we’ve put together the perfect Transformation Program for YOU, we’ll introduce you to your Transformation Expert Coach who will be with you every step of the way. Together, you’ll get started.

Client experience:

SIEFIT is not just a place to work out, lose inches, or change physical appearance.

SIEFIT is a space to regain self-esteem and selflove a daily therapy that keeps us grounded amidst so much adversity.

Beyond the achievements I’ve reached in my transformation over the past 11 months, I am deeply grateful to SieFit for giving me back what I had lost to the monotony of life in this country: the discipline and perseverance to achieve my goals.

Thank you for being a beacon of light for all of us who lost our way but chose to reconnect with our essence.

Wishing a wonderful start to Thanksgiving week to this amazing community ♥️

Joanna

I was Facebook stalking Siefit for about 2 years before joining. Finally after being stuck physically where I was at I decided to meet with Sierra.

Best decision of my life! I have lost some weight since joining Siefit about 9 months ago, but to me it is not about the weight at all.

Sierra and her team are there to guide you from start to finish. Now I am more confident in everything I do. My core muscles are becoming stronger. I no longer have knee pain or hip pain. To me that is the most valuable thing.

The fact that I no longer have to go to a chiropractor or an orthopedic doctor due to my bursitis in my hip or arthritis in my knees. Siefit has changed my life completely.

I can not thank Sierra or her team enough! If you are on the fence please do yourself a favor and meet Sierra for a free consultation.

Jessica G

Sierra and her trainers are the best I’ve ever worked with. I’ve been coming for 2 1/2 years and at 37 years old, this is the best shape I’ve ever been in.

Sierra doesn’t skip a step, making sure you to get not only your fitness in order, but your nutrition, supplements, and emotional health in order too.

She makes sure the workouts and modifications start where you’re at and get you to where you want to be.

I can’t say enough good things about this gym culture.

Heather

Progression

How we can help: Around the clock communication with industry leading trainers. Daily tasks & weekly body scans to track progress.

Workout

How we can help: We guide clients towards a realistic balance for a sustainable, healthy lifestyle.

Nutrition

How we can help: Learn how to eat delicious foods while saving time, money, and getting results.

Hi! We're A Local Gym In West Dundee, IL.

Established in 2020, it’s our mission to help people in West Dundee, Sleepy Hollow, Elgin, Carpentersville, Pingree Grove, Algonquin, and surrounding areas get fit, stay healthy, and live life on their terms without fitness being an obstacle.

Claim your 7 day free trial

By checking this box I agree to receive occasional marketing messages from SIEFIT. Message frequency varies. Message & data rates may apply. Text HELP to +1 224-481-1183 for assistance. You can reply STOP to unsubscribe at any time.

follow us on @iamsiefit

FREQUENTLY ASKED QUESTIONS

How Much Are The Memberships?

Memberships at SIEFIT vary depending on the individual.  Our transformation programs can include group training, individual training, nutrition plans, open gym, aquatic sessions, recovery, and more!  Once we design the perfect program based on your goals and timeframe, we will go over the price.

Do I Have To Have Experience To Workout At SIEFIT?

Not at all.  Our gym is designed for beginners to advanced, and we’re with you every step of the journey!

Do I Have To Commit To A Long-Term Membership?

Absolutely not!  The length of your membership is based on your goals and where you’re at now.  12 and 24 month memberships are NOT client-centric and our gym is all about our clients and their success!

I Want To Get Into Amazing Shape, But I’m Scared To Get Started.  Help!

We got you.  We understand getting started is the hardest part.  We’ll take it one step at a time.  Step 1, come in for a “no sweat intro” and have a chat with us.  No working out, no sales pitch, we’re just going to talk about your goals, that’s it.  If you’re excited about what we talk about, we’ll move on to Step 2.  No pressure, we’re coaches, and we’re here to help.

Ready To Get Started?

Discover How You Can Transform Your Body And Life With The Help Of A Transformation Expert Who Will Be With You Every Step Of Your Journey!

We KNOW You Have It In You! Will You Be Our Next Success Story?

follow us on @GymFitnessBox

Powerüft is a champ in providing its users with absolutely everything a fitness or gym site needs.

Our Socials:

Facebook

Instagram

YouTube

Important Links

Resource Kit

21 Day Home Challenge

7 Day Free Trial

Membership

Contact

Important Info

21975 Doral Road

Waukesha, WI 53186

414-326-4420

[email protected]

working hours

Monday — Friday:

07:00 - 21:00

Saturday:

07:00 -10:00

Sunday Closed

Important Info

999 W Main St Suite 100 West Dundee IL 60118

(847) 649-6698

[email protected]

Staffed hours

By Appointment Only

© Copyright 2025 | SIEFIT