Steven Sashen is one of the fastest sprinters over the age of 55 in the country. But he didn't start sprinting (since high-school) until his 40's. Along the way he discovered running barefoot not only resolved a lot of foot and leg injuries, but improved his speed and endurance.

That twist of fate led to him creating a new sandal-shoe, then start Xero Shoes company, being on Shark Tank and living life to the fullest.