Robert Sleigh may have retired as a philosophy professor, but he was far from retired from life. At age 75, he not only entered the World Championships of Indoor Rowing, but he won!

Paris Hilton has nothing on the original party girl, Sally Pierone. She even had her own Nicole Ritchie sidekick -- President Teddy Roosevelt's granddaughter, Theodora. After her life fell apart, she put it back together when she was 73 years old.

Ray Zahab used to be a smoker who lived an unhealthy life. After a few major life changes, he's on the other side of the spectrum, running marathons, raising awareness for important causes and living an adventurous life.

Pat Bond rediscovered the joys of athletics in her 40s and the 68-year-old says sports have actually made her excited to age.

A woman who didn't even start swimming until her mid-60s is now lapping up the competition, earning four No. 1 rankings.

Rather than regretting the mistakes of his youth for the rest of his life, 59-year-old Mike Flynt decided to suit up and earn his way back onto the college football team he was once booted off.

81-year-old Robert Gralley has completed more than 40 marathons and is not slowing down any time soon.

At 77 years old, Paul Nadeau bicycled across 10 states for 66 days.

Richard Abrahams was one of the world's best swimmers during his collegiate career in the 1960s, and amazingly, now that he's in his 60s, he is swimming faster than he ever has before!

We all know it's not unusual anymore for adults to decide to go back to college, but at the age of 95? Nola Ochs has one semester left to become the oldest college graduate in history!

Nola Ochs didn't set out to make history but that's exactly what she did. At 95 she became the oldest person ever to graduate from college!