Keeep doing pull ups and push ups everyday until ur arms ache
like mad and u cannot even hold up ur chopsticks with ur arms
shaking. Requires ALOT of motivation though but GUARANTEE will work
as your aching arms signal your muscles are getting stronger. The
more it aches, the stronger. This is the method used in BMT which
works quite well, and all in a space of a few weeks.
If you are the kind that dont want instant or fast results, then go
to California gym or something Hahaah