just as a note, as i didn't mention it before, I am 24
karamazov80: i figured now that i have the time, let me outline the drill
do 50 jumps, 30 second break, 75 jumps, 30 second break, add 25 jumps after each break, up to 200 jumps, then reduced by 25 after each 30 second break until you reach 50 jumps again
at first i just did them, but know in an effort to keep the interest going, i record how long each set takes and try to beat my time each week, let me know how that feel. first time i did it i had cramps in the lower legs for 2 days