Im in week 6 of air alert N i think its jus stupid, you cant do 2 sets of 50 leap ups each at maximum force, i might try to finish week 6, but as of now i feel it could ruin my knees N im scares.

Im probably gonna switch to VJB since i already have it.
Anybody have any advice to what i should start doing ?
N my question is, do i have to kno what some of the excercises are ? Cuz i dont see them all explained, i.e ankle jumps ( I kno that sounds self explanatory ), theres so much to read i dont kno if theres a section where the excercises are explained or not so... Y'kno, thanks in advance