Dr. Larry Grogin, 71, was diagnosed with Parkinson's disease in 2019. Rather than let the diagnosis define him, he set out to run 100 marathons in 100 consecutive days from New Jersey to Los Angeles to raise awareness for the Davis Phinney Foundation and prove that movement is medicine.

By Sadie Smith

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This story is sponsored by Serious Texas Bar-B-Q and Happy Pappy's Pizza & Wings.