739 Main St. Evanston, IL 60202


Dietrich Horsey is a trainer with a community-oriented spirit and believes in giving back, by spreading awareness of fitness and nutrition and raising funds for educational institutions and community service organizations.

Since 2009, Dietrich has been donating his time and leading the annual CardioFitness and Nutrition Tips Fundraiser to provide scholarships to students in Truman College’s Transitional Bilingual Learning Community (TBLC). Together, Dietrich and his long-time client Ana King, an English professor in the TBLC, launched the CardioFitness and Nutrition Tips Fundraiser, as a way to raise desperately-needed funds for these students while also raising awareness of exercise and nutrition. Over $12,000 has been raised throughout the years and all proceeds go directly to the TBLC scholarship fund.

Leading the pre-warm up at NamiWalks, Evanston, IL.

Sponsoring Ricky Byrdsong Memorial Race Against Hate, Evanston, IL.

Please, contact Dietrich Horsey if you would like D21 to promote fitness while fundraising for your organization or charity.

New Referral Reward Program

Please spread the word about D21 Fit Studio by subscribing to our YouTube Channel, and sharing our videos with your friends! If you refer a friend that signs up for at least 3 months of personal training, you will receive $100 towards your training payment!

We want to hear from you!

D21 is here for you, not only to help you achieve your goals but to give you the tools to be successful on your own! So now we are reaching out to you to ask what type of group class you want to see us have.

Are you interested in a group class for seniors, stay at home moms, strength training, or cardio? You name it, and we’ll do our best to put it together.

Please, send us an email with your suggestions to

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  • Individualize fitness program
  • Understand your body
  • Adjust fitness regiment and redirect focus as needed
  • Keep on track to achieve goals
  • Help to see results backed by scientific data