CALL TODAY 847.875.9734

theundergroundfitnessclub@ gmail.com

About The Underground

The Underground is McHenry County’s first women only fitness studio that offers exciting alternatives to the traditional gym or health club. There are no fancy machines here, just outstanding fitness classes and great instructors!  

We are a local family-owned business dedicated to helping give women over the age of 18 in any fitness shape and any body size a safe judgement free place to play, dance, workout and socialize.  We are committed to provide products for women with the best ingredients that will positively influence the life expectancy rate of women in McHenry County.

The Underground is proudly owner managed and operated by Megan Miller.

Best Sellers

Cardio/Fat Burning

Extreme Results

Getting Started

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Core solutions


The best health club in McHenry just for women that has Zumba® P90X®, INSANITY®, Pole Fitness, Aerial Firtness, Barre, Yoga, Boot Camp and more.

3649 Municipal Drive

McHenry, IL 60050




60 Day Challenge

begins May 2, 2014

Click Here for more information.

insanity at the underground

Get ready for ARM SEASON now!  You still have time to get rid of those flabby arms and tone them up by summer. Doing the right exercises properly in Danny’s Tank Top Arms class for the next 60 days will transform they way you feel about wearing a tank top this summer. Don’t leave your best “asset” behind. Tone lift and shrink your booty into shape with Danny’s new ½ hour “Butts & Gutts”.


Start these two new fitness classes this week, and complement it with a steady routine of strength training and cardio workouts.  You will see results before Memorial Day!  

Mother's day gift ideas in McHenry at The Underground Fitness Club
May 11 - Mother’s Day

New Classes

Tank Top Arms 6:00 - 6:25 PM Tuesday

New Classes

Butts & Gutts 5:30 - 6:00 PM Tuesday

tank top arms
butts and gutts