if you want to build muscle then your going to need more then a few press ups. You need to get in the gym and start hitting the weights. Check out the journals section of the forum to see what kind of exercises you should be doing. If you get confused by anything use the
search function of the site, if that fails then post a thred and i am sure someone will know the answers to your questions.
I suggest you go for a 3 day a week weight lifting work out and then spend an additional 3 days doing
cardio workouts like running and cycling