I’m joining the Navy and leaving for Boot Camp in January. I can do curl-ups and the running both fine for my PT tests but I am having a lot of trouble with push-ups. I have to do 42 in two minutes with the only rest being in the up position of the push-up. I can do all 42 in the two minutes except I always have to put my knee down or even just lay down for a moment to continue again. I can do about 25 without breaking but by that time I can barely hold myself up without resting for a bit. So I wanted to know some exercises I could do (along with push-ups, or variations of the push-up) to increase my push-up endurance in 8 weeks, again with my ultimate goal being at least 42 push ups in 2 minutes without resting. Thanks.