About The Founder

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Meet Kat

Follow @katherinetolis on Instagram

Featured in The Purist Magazine

Katherine Tolis is a highly sought after celebrity stretch therapist, Pilates instructor, NASM certified personal trainer, wellness/nutrition guru and data scientist.  She is passionate about living life at your highest possibilities. She believes incorporating epigenetics and healthy lifestyle choices can keep your strength, performance and energy elevated to excel in all the activities that excite you the most. 

During her ten year career forecasting trends as an actuary and data scientist in Manhattan, she struggled with stress-related health issues which inspired her to start her company to share her knowledge and stress-reducing techniques with others, while making it fun and enjoyable.

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She founded the Strength+Stretch by Kat method to share the benefits of her offerings with the world.  Fitness and wellness studios can hire Kat to train their instructors how to effectively perform one-on-one assisted stretch therapy and other recovery techniques to optimize their clients’ performance.

Through her wellness concierge services, Kat works with many high-powered, overachieving clients who want to find fast, simple ways to have healthy meals and snacks for the whole family.

She also provides suggestions for delicious restaurants with healthy options, wellness activities and chemical-free products.

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Her struggle with hypothalamic amenorrhea lead her to explore her health and fertility from a holistic perspective, and she became inspired to help others on their natural wellness journey and impact the lives of many. In the hustle and bustle of the city and jet-set lifestyle, from the Hamptons and NYC to Miami and Aspen, she helps her clients tame their type-A tendencies in sessions that do double duty as killer workouts followed by relaxing and therapeutic stretching.

Kat aims to educate her clientele on the health risks of too much cortisol in the body, resulting from too much stress at work, overtraining without proper recovery and insufficient nutrition. She then designs custom-tailored programs, e.g. “The Surfer,” “The Golfer,” “The Triathlete,” which focus on strengthening and stretching muscles specific to those activities.

She also incorporates data-driven performance+recovery, employing fit-tech to provide measurable and optimum results.

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Why “XcellBODY?”

The name XcellBODY is a play on Excel Spreadsheets which Kat spent most of her days on during her former career in the data analytics industry. It also speaks to the benefits of the service which help people excel in their unique activities and goals. The spelling Xcell refers to sculpting the body and genetics on a cellular level. Kat is an expert at helping others make these lifestyle changes in order to look and feel amazing, slow down aging, prevent degenerative disease and increase longevity and cognitive function.

Kat’s Mission:

Kat desires to reimagine stretching and recovery as fun!

She aims to encourage everyone to incorporate more stress-reducing health and wellness techniques into their busy lifestyles and enjoy the benefits while lowering the risk of injuries and stress-related health issues. This includes talking about her own struggle with hypothalamic amenorrhea and the potential fertility issues it can cause. A recent trend shows many females have lost their menstrual cycles due to overexercising and insufficient nutrition for their active lifestyles. Hearing stories from so many women with similar struggles motivates Kat to continue helping as many people as she can.

Kat volunteers in equine therapy helping children with special needs improve their mobility. The horses make the therapy more enjoyable for the children. Kat and her team at XcellBODY incorporate soothing techniques, healthy snacks, recovery drinks, CBD products, massage guns and positive energy to make recovery a fun and enjoyable experience whether at the golf course, after a race or sports competition, fitness event, pool party, office or corporate retreat!

Keep up with Kat.

@Katherinetolis & @Katherinetolis_xcellbody