YES.

"Smith says Jordan is the hardest worker he's ever coached. In high school Jordan hustled so, he was nicknamed The Rabbit. Rabbit, run. When he enrolled at Chapel Hill, Jordan ran the 40-yard dash in 4.6 seconds. This fall he ran a 4.3. By running and lifting weights he has substantially built up his upper body and gained 12 pounds in two years, most of it in the shoulders."

http://sportsillustrated.cnn.com/basketball/nba/1999/jordan_retires/archive/831128/

do some research, and you clearly didn't watch mike J.