You can tell Johnny Pearman knows a lot about hard work and determination. Just look at his body.

The celebrity trainer based out of San Francisco first grew up in Kentucky, where he spent his youth pitching hay, working on house construction and other physically demanding jobs. Fast forward to the present and Pearman has a thriving fitness career working for Diakadi Fitness, specializing in a number of areas like gymnastics, running and bodybuilding.

Pearman appears in a number of fitness videos, including interviews, his own workout tip series and a commercial for iSport headphones. Check him out in action below.