He high jumped seven feet and was a leading force in beach volleyball. I saw some videos of Wilt in HS and he would often bring up the ball when the 'Brook got pressed. He's the only player in NBA history to have led the league in scoring, rebounding and assists. Obviously, if they had kept track of blocked shots back then, he would have led in that as well.
Even more amazing than his 100 points, almost 24,000 rebounds, averaging 50.4 ppg was the season he average 48.5 minutes per game for a season.
For his first six seasons, he sat out less than 1 mpg averaging 47.2 mpg. Hell, for his entire career (which included several years with very bad knees), he averaged 45.8 mpg.
While at Overbrook High, Wilt would often skip tests to avoid getting straight As, because he was self-conscious about being one the smartest kids in the school as well as being the best athlete. I was told by a close friend of Wilt's that Wilt spoke at least seven languages.
He didn't reach the NBA until he was 23. Imagine how crazy his numbers would have been if he had arrived at 19 or even 21.