Moss used to do single - leg squats on the bosu ball while holding a 45 - pound plate .
Tyms decided to do single - leg squats on the bosu ball while holding a 45 - pound plate .
Moss used to do single - leg squats on the bosu ball while holding a 45 - pound plate , so Tyms decided to do single - leg squats on the bosu ball while holding a 45 - pound plate .