An
exquisite visual study of Tim's calves at age 11. (Part 3 of 3)
Tim is doing depth jumping. That is, he is jumping off a 2-foot box, landing
on the cushioning and then springing up as hard as he can to land back
on the starting point. He keeps this up for 10 minutes. It's incredibly
difficult to do that long. When he's done his leg muscles are burning.
He rests 2 minutes and then goes for 7 minutes, then for 4 minutes for
a total of three sets of decreasing time.
He uses the box to land on because his leg muscles can exert tremendous
force when he jumps and his feet need to have some protection. |