Crossfit Nucleus

Crossfit Nucleus


Come join Gambit Fitness celebrate Mardi Gras with "St. Louis' Least Legitimate CrossFit Competition" but one that will guarantee you lots of fun!

A short, high-intensity competition set in the heart of St. Louis' Soulard Mardi Gras celebration. 5-6 strength and fitness-based events typically around 5 minutes in duration.
The competition takes place from 8AM - 1PM with the party going on until 4PM-ish. As an athlete or spectator, you can enjoy the Mardi Gras parade between events with food and beer included in your ticket price.

This is a partner competition. 3 divisions are available: Scaled, Intermediate and Rx.

Recommendations are simple. If you typically do not Rx your gym WOD, choose "Scaled". If you mostly Rx the gym WOD, except when the weight is very heavy and high-skill choose "Intermediate". If you always Rx your gym's WOD and sometimes choose the Rx+ option when available, choose Rx.
Dave Castro's clue for the first workout of the Open. Any ideas?
Thanks for a great Saturday workout! Always fun when I am able to join y’all. Look forward to seeing you next time! 🙌🏻
Thanks Nucleus for hosting the SWAT crew this morning for the Hopkins Hero workout in honor of Nick Hopkins.
Comment “ENTER ME” when you’ve watched the video and liked the pages, to be entered into our give away!!
Go give Crossfit Nucleus a like to be entered into our give away!! 💪🏽
Don’t forget to like our page and SWOOP Transportation too!!
We will be back next week with another amazing company!
Town Hall is now preparing Welcome Kits for new families that are moving into our community.

These new families are looking for a new EVERYTHING!

Town Hall contacts these new families each week as soon as they move into their new home.

These new families will find new places to eat, work out, wash their car......they need a new Hair Salon, Spa, Auto Repair Shop, Optometrist, Dry Cleaner, Pet Groomer, Day Care Facility, Florist, Nail Salon, get the idea. They are actively seeking new local businesses and creating new purchasing patterns. They will become someone's next new local, loyal customer.

Town Hall will direct them to you before your competition even knows they are here.

Since our Welcome Kits are exclusive, and we can only accommodate one business per category, I would ask you to kindly let me know if you are interested in being featured in our local Welcome Kits.

I would like to schedule a time when you are expecting me so that I may drop off a sample of our "Welcome Kit" and explain the program in greater detail.

Please reply to this message with your availability or call me at your earliest convenience.

For a faster response, or if you prefer, feel free to text me on my cell which is listed in my signature.


Chad Roehrs
(314) 779-6786
[email protected]
Don't know if anyone else caught this, but I was watching the C&J ladder from the Games last year and saw some familiar faces!
Southern Illinois Fibrotherapy
Inside CrossFit Nucleus, Swansea, IL.
Specials Available!
3 One Hour Massage for $150
19.1 sauna views!
Frank The Tank was a SUCCESS! Come join us if you want to see what all the fuss is about!!
I have to brag on my 5am— it’s Monday, it’s rainy, and it’s early, but we still had 20 people here this morning working on their fitness! 💪🏼 (two people not in the video)
GameDay Competitions is excited to be coming to the Chicago area! and we want to offer your gym an opportunity to earn some extra cash.

2-Person MF 🏋️‍♂️🏋️‍♀️ Teams in Tinley Park on September 22nd. 💪 All athletes get hooked up with a T-shirt, blender bottle, and a team name sign.
We've been known to host some pretty stellar competitions and GameDay Chicago will be no different! we pride ourselves on ALWAYS being on time.

Contact GameDay Competitions if you're interested in setting up an affiliate program and earning your gym some cash. 🤑🤑🤑

Look forward to seeing you there!

A Strength and Conditioning facility using group and personal training to help improve fitness daily

CrossFit Nucleus is a First-Class facility located in Belleville Illinois. SCHEDULE:

12:00PM-1:00PM (Tues/Thurs/Friday)

8:00AM-9:00AM - CrossFit Group WOD


We have a 9000sqft building designed to improve your health & fitness, or your child’s athleticism. We have CrossFit strength & conditi


10/10 recommend having an in house competition followed by a Chili Cook Off!! We had the best time!! Thank you to our amazing people!!! We ARE Nucleus!!! 🤍


The hardest part about Monday is showing up!! Never skip a Monday!!


The evening crew had some special treats as an “I’m sorry” for the work out today 😉


A fun Saturday partner workout.

We did a fun mash up of the Wodapalooza Online team qualifier workouts all in a 40 minute time frame!

Come check us out!!


Raise your hand if you’re excited for the weekend!! ✋🏼 What are you up to?! Let us know in the comments!! 💪🏼


Today, we accumulated 3 miles that INCLUDED walking!! We are currently in the middle of our Running Capacity cycle. It’s nice to mix in these days after 2 fun days of lifting!! 🏋️‍♀️ 💪🏼


First pressing
This conditioning piece!

FREE week trial, just message us to set up a time to come in!!


It’s not goodbye, it’s see ya later!! We will miss you Derek!! Safe travels and we will be here waiting for you when you get back!!


CrossFit Games week so we are celebrating with Girl Benchmark workouts all week.
Todays main course for fitness is “Kelly” and she’s a brutal one!

Make sure to do some extra stretching after this one!!

What’s your favorite “girl” workout???


Getting a little heavy and simple for strength, then a lotta grip for the conditioning today!!

Happy Friday!!


Todays class consisted of some Kipping Pull up do’s & don’ts, with a chance to practice technique at different stages of individuals fitness levels.

Then we took on a fun Benchmark “Lynne” with some max reps on a bench press and max reps on a pull up bar!
Fun change of pace and a lot of good learning.

Come join the fun!


HS girls. This rain moved everything around this week.

There is no training at 1:30pm tomorrow.
However, if you can make it to a noon class there is an opportunity to get a workout in at that time!

Hope to see you all for one last workout this summer at noon Thursday!

Sorry for any inconvenience!


HS/youth girls training session at 1:30pm is cancelled today.
Our Coach can not get to the gym due to flooding.
Sorry, stay safe!


Happy Saturday!

What’s your fitness look like for today??

Coach crushing that Sn**ch!


Schedule reminder:

High School Girls NO class at 1:30pm today.

High school guys still have class at 8:00am Friday.


Who likes split squats???

This cycle we are shaking things up from our traditional bi-lateral squatting and getting some uni-lateral work in!

We like to mix it up and make sure we build overall strength every week!


Big shout out to these 4 for representing at the
You all crushed it!!

Let be what you need it to be, for some of us it’s a challenging competitive outlet!!


Saturday’s at CrossFit Nucleus!!

A fun 40 minute partner workout.

Come join us for all the fun & fitness!


Big Congrats to on a year of dedication and clearly her results showed up!!

Who is ready to start their journey right now so they can make a similar post a year from now???

- Show up to get started
- be consistent every single week (3-5x a week)
- listen to your coaches
- eat real food
- watch your body make physical, mental, & social changes for the good

Message us to get started!


Strength & Conditioning everyday.

We use our “strength” segment of our group classes to get better at moving. Initially it’s lighter weights working technique and then when you’re comfortable with the movement we’re working on that day you start challenging yourself with more resistance each time! Some times people are comfortable day one some still choose to work technique years into training. Both are fine because there’s multiple benefits to the movements we choose, not just strength….. coordination, balance, mobility, stability….


Happy 4th of July from the CFN crew!! We hope you’re all enjoying your day!! ❤️🤍💙

To celebrate, come try any class for FREE all week!! Message us for more info!


Happy 4th of July from the CFN crew!! We hope you’re all enjoying your day!! ❤️🤍💙

To celebrate, come try any class for FREE all week!! Message us for more info!


When your weekend kicks off with a fun Saturday workout at CrossFit Nucleus, you can’t help but smile like this the rest of the weekend!!!

Family, friends, community all having fun being healthy!

Yes we do some hard work but we make sure to have as much fun as we can in the process!!
Message us to get a free trial for 4th of July week!

Photos from Crossfit Nucleus's post 07/01/2022

Two new faces joined our community today!

We are very excited to help them in their fitness journey moving forward!

We have room for more so let us know if you want to come give us a try and be as cool as these two!

What’s holding you back to the goals you want to achieve??


Coach Zac getting our 9am class ready for some Deadlifts for strength/skill!

Picking things up from the floor is an important part of life. Doesn’t matter if you pick up 400lbs or 15lbs in the gym. We are here to make sure you are doing it properly with good technique to stay safe and enjoy your life as much as possible…. And if those jeans look a little better in the process it’s a bonus 😉


Be like Jennifer, come join the fun at CrossFit Nucleus!!


What’s your exercise plan look like today??

Strength? Yoga? Cardio? CrossFit? HIIT? Bootcamp?

Let’s hear it…


Today we honored Officer Nick Hopkins for the 2nd !! This group crushed this work out and showed their continued support for our fallen hero and heroes! 💙


Warm up, cooling down, or the peak of our conditioning piece we utilize the Assault/Echo bikes regularly at Nucleus!

Come join the fun!
Lift. Sweat. Eat real food.


Coach Zac getting the 9am ready for some Barbell weightlifting.

Sn**ch day.
- it can be intimidating at first but our coaches do a great job breaking it down step by step and making sure each athlete is working at their appropriate level with ALL movements.

Sn**ch is a movement that improves full body coordination, shoulder stability/strength/mobility, core strength, leg mobility/stability/strength, and so much more. Even if you aren’t able to throw around “impressive” weight your body thanks you for using the exercise to make it more functional!

**ch day is our favorite!


Sometimes some of us get a chance to test our fitness in fun completions!

Here is the Nucleus crew full of athletes and spectators from Firebreather this weekend at Capital City CrossFit.

Congrats to the teams who gave their all and thank you to everyone who came to cheer them on, love having the biggest crew at these events!

Big congrats to & for bringing home the Gold in the RX woman division! Great work ladies!!


We love new faces!

Let the summer weather motivate you to come give us a try.

Group fitness has a long list of benefits!
Our bodies are very similar so our fitness plans can have a very similar foundation… squat, hinge, push, pull, run, jump… Strength train, cardio, mobility…

Top 3 reasons to join Nucleus group CrossFit class.

1) Professionally trained coaches to lead you through 60 minutes of exercising every day. From a general & daily specific warm up, focusing on developing stronger more toned muscles during our strength piece, and making sure you’re doing appropriate movements you are confident with for our daily conditioning/fat burning piece! Along with having our coaches help you learn new things and improving your movement technique for all exercises!

2) Educated & experience goes into writing the daily workouts. Coach Michael Whetstone has been inside a gym for over 25 years. In 2009 he got a degree in Exercise Science from SIU-Carbondale. Certified personal trainer through the National Strength & Conditioning Association. TRX certified. CrossFit Level 1, 2, & CrossFit Sport specific certificate. Masters in Education which helps develop a coaching strategy that layers our classes for all fitness levels from those who never worked out before to professional athletes.

3) Accountability & Motivation through new friendships. Our members become more then just gym members. You’ll have workout buddies looking forward to training with you everyday!


Strict Shoulder press for strength.
5:30pm class working on technique & improving upper body strength before we get too sweaty!

Photos from Crossfit Nucleus's post 06/04/2022

Saturday mornings at the gym hit different!!

We like to get our weekends started right with some good old fashioned partner workouts!!

Come join the fun!!

Message us today to get in on the Summer deal!

If you message us wanting to get signed up before midnight tonight you will save 22% the rest of this month, AND, July AND August!!!
3 months with 22% OFF… all summer for a great deal!

Don’t wait when the savings are right now, you know you want to come check it out might as well save some money in the process… 🤙🏼🤙🏼😁😁


Today is the last day to get June, July and August all at 22% off!! Message us to lock in your discount!


Our 4pm class making sure we are mobilized to maximize our training session!!!

Strength for the day was 4x5 Back Squats so we had to loosen up those tight hip flexors!!

We make sure we take time to give our bodies some love everyday. We can’t just go maximum intensity everyday all day.
Foam rolling, banded stretching, dynamic bodyweight movements to get started, and all the things!

3 month Summer Special is good through this Saturday (2 more days)! So come get signed up and get 22% OFF through August 2022!!


Post-Murph stages.



Today was a great active recovery day! All of those sore muscles from Murph were stretched and warmed up!!

What was your work out today??


Today we remember those who gave the ultimate sacrifice for our freedom. 🙏🏼 We will honor them. We will never forget them! ❤️🤍💙 🇺🇸

Photos from Crossfit Nucleus's post 05/28/2022

On Saturday morning we get a fitness partner, pack the house, and have some fun!!

Come check us out!!
Don’t miss the Memorial Day deal if you’ve been thinking about trying group fitness this is your perfect time to join!!

Limited spots available for the 22% OFF all summer long(3 month) Memorial Day special!

Our Story

CrossFit Nucleus is a First-Class facility located at 350 Old Fullerton Road, Swansea, Illinois.


5:00AM-6:00AM (must be reserved)
6:00AM-7:00AM (must be reserved)
(Wednesday and Thursday NO 6pm Class, Friday NO 7pm Class)

8:00AM-9:00AM - CrossFit WOD
9:00AM-10:00AM - Midwest Menace Team Training
10:00AM-11:00AM - CrossFit WOD


We have over 5,000 square foot of workout space, locker/shower rooms, inferred Sauna, kids area, plenty of outdoor space to change things up, and much more!

We are dedicated to getting people in the best physical shape imaginable. We utilize all aspects of fitness including: running, jumping, lifting, rowing, gymnastics, and everything else imaginable to change our bodies physically. All of our classes are taught by a professional and are extremely motivating to get more out of yourself then you would get alone.

Working out in a group will get you better results(physically and mentally), doing full body functional movements will get you better results, constantly varying the workouts will keep getting you results, and working at relative higher intensity will force your body to change (physically and mentally). After 3 months of doing CrossFit with CrossFit Nucleus your life will never be the same!!

Videos (show all)

Sign ups are now live!!!Limited space available this summer so don’t hesitate to reserve your spot!!High School girls tr...
There is NOTHING better than #openmagic!!! @torrihodge got her FIRST BAR MUSCLE UP during 22.3!!! Congratulations Tori!!...
🍉 OKAYYY FitAid!!! We are obsessed!!! •••••@fitaid #watermelonmint #crossfitnucleus💪
Coach @ecfitmama3 with a bada$$ Front Squat PR at 190#!!! ••••Way to go Erin!!! Can’t wait to see what you hit next!! ••...
Monday brought the power!! We snatched for a 1RM and then used heavy power cleans in the metcon … and it was spicy!! •••...
Happy football day!Let’s congratulate Nucleus athlete @dylanburton_55 on committing to play football at Augustana Univer...
Wall Walkin’ into the weekend like …… ☺️••••Happy Friday!!! Have a great weekend everyone! ••@kale_612 @shullbrent @erin...
Sometimes we practice new fun things!! Here’s one of our youngsters working on getting inverted!Happy Saturday!!#CrossFi...
Driller make Killers!!Off Season is in full swing for my high school football guys.$100 a month for 3-4 training session...
Skill progressions/drills for Snatch!Even the most dynamic movements can be broken down step by step for everyone to lea...




350 Old Fullerton Road
Swansea, IL

Opening Hours

Monday 5am - 8pm
Tuesday 5am - 8pm
Wednesday 5am - 8pm
Thursday 5am - 8pm
Friday 5am - 8pm
Saturday 8am - 11am

Other Massage in Swansea (show all)
Nucleus Wellness Center Nucleus Wellness Center
350 Old Fullerton Rd
Swansea, 62226

Fibrotherapy: Cross-Fiber Deep Tissue Manipulation!! Malfascial Release, Therapuetic Exercise, Trigg