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Let Us Help You Find Yours!

Who We Are

Jason Venckus

Owner - NASM CPT, PES, CES, FNS & IIN Health Coach

Jason specializes in corrective exercise, psychology of nutrition, weight loss and endurance events. He teaches most of the classes each week and all "Office Hours". He is also available for private training.

Sean Clark

Trainer - NESTA CPT, Kettlebell, Sports  Performance, Pre and Post Natal.

Sean specializes in TRX/Suspension training. He teaches 3 classes per week including Tabata, Max Burn and Bells, Bars and Balls. He is also available for private training.

Lise Gorajksi

Trainer - ASCM CCT with specializations in Weight Loss (NASM), Corrective Exercise (IdeaFit), Gold Boot Camp, Brains and Balance, Silver Sneakers Cardio and Balanced Habits Food Coach. Lise is also registered with the Kukkiwon in Korea as a first degree Tae Kwon Do black belt. Lise is also a Master Gardener.

Lise specializes in balance training, heart rate training and conditioning for runners/hikers. She teaches 3 classes per week including: Back to Core, No Excuses and Muscles M&Ms. She is also available for private training.

Melissa Simo

Yoga Instructor - Melissa  has a love of what fuels, enlightens, and deepens our connection to ourselves. She holds a BA in dance from Columbia College Chicago, and is a certified Feldenkrais teacher as well as a Yoga teacher. She is influenced by her studies in both Ashtanga and Iyengar yoga, functional anatomy and biomechanics, and her playful dancing spirit. Humility, passion, adventure, gratitude, curiosity, love and patience have been teachers which continually guide her into her practice and teaching. These gifts keep on giving!


"Working with Momentum has been transformational for both my mental and physical health. I'm eating better, more active and overall, I have more energy to get me through the day and week."

Ken Grunke

"I was a runner in my 20’s and 30’s but gained a bit of weight and running became difficult. Through Momentum’s guidance I was able to lose nearly 60lbs and run again. The classes and nutrition advice is what helped me get there. I even ran my first 15k race and am shooting for my first half marathon at age 58!"

Mark V.

"Not only has Momentum’s program changed my body, but my lifestyle. I’ve learned not to stop snacking but to snack sensibly with healthy options. The daily motivation that is provided keeps me inspired to come to classes at least 3 times per week after going through one on one personal training for 3 months and losing nearly 30lbs!"

Yvette M.



Choose your service here. We have something for almost every aspect of your health. 

Jason VEnckus


6508 W. 34th St. 

Berwyn, IL 60402

Tel: 815-343-8212


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