Our Team

We Are FIT Together

FIT Together is a 501(c)(3) nonprofit organization founded in 2014 under the leadership of Dr. Kerri Winters-Stone and Jessica Sitemba. The mission of FIT Together is to provide evidence-based, professionally led, group exercise classes specifically designed to meet the abilities, needs and goals of people who have faced cancer.

Even though classes are taught in a group setting, FIT Together instructors are highly experienced in individualizing and tailoring movements and exercises to accommodate each person's needs, making classes a collaborative experience for all.

Photo of Kerri Winters-Stone

Kerri Winters-Stone

Co-founder and President

Committed to ensuring that people with cancer can join exercise classes that are proven beneficial, safe, and accessible, Kerri started FIT Together in 2014 with co-founder Jessica. She has a PhD in Human Performance and has been conducting research in exercise oncology for 20 years. She has run over 15 clinical trials funded by NIH and cancer non-profits and she co-wrote the current American College of Sports Medicine exercise guidelines for cancer survivors. This expertise and passion to bring science to practice is what led to FIT Together. Seeing how FITT changes the lives of people with cancer is the most rewarding part of her career.

a woman in a blue tank top is smiling

Jessica Sitemba

Co-founder and Secretary

Always an advocate of exercise for physical and mental health, Jessica earned a Master’s degree in exercise and sport science. She is a certified personal trainer with the National Strength and Conditioning Association (NSCA) and has been a project director on exercise intervention studies to improve symptoms and side effects from cancer and cancer treatment. She has witnessed firsthand what exercise can do for people with a history of cancer, one of the reasons behind creating FIT Together.

a woman in a black tank top smiling at the camera

Thais Denmark

Strength Instructor

Thais is from Brazil and has a PhD in Science of Human Motor Skills with a focus on physical activity and health. She has a background in clinical research studying the effects of combined exercise programs on body composition and quality of life in breast cancer survivors. She believes that exercise can help people get healthy and live longer and emphasizes building a foundation of strength, balance, and mobility.

Join Our Team

FIT Together classes are taught by certified instructors with experience working with older adults and people who have or have had cancer. If you are interested in joining our team as an instructor, please contact us

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