i've been on a workout that has increased my strength incredibly. anyone looking to get a stronger upperbody in just a matter of weeks should try it:
Intensity Frequency
Mon- 100% (test); 40% 60 min
Tue- 50% 30 min
Wed- 70% 45 min
Thur- 40% 60 min
Fri - 80% 60 min
Sat- 55% 90 min
Sun- 20% 90 min
on monday, do as many pushups as you possibly can at once. say it's 100. then on tuesday, you're going to do 50 pushups every 30 minutes from the time you wake up to the time you go to bed. on wednesday, you'll do 70 pushups every 45 minutes, and so on and so forth.
try this for two weeks, but do not do any sort of other workout at all. this has increased my strength incredibly. i don't like using weights, but when i got back to the bench from 195 i was at 230 repping 5-6 times on 4 sets.