Quote Originally Posted by rocker_v
Quote Originally Posted by Chris N.
Just punching for an hour a day isnt going to put more muscle on your frame. You gotta have something that you're working toward. The regular boxer's regimen would do you well. Doing the roadwork, and the calisthenics would help get into good shape.
will twice a day of 1 hour do.
It will not. Just the movement punching alone will not increase your strength or the size of your muscles. To do so you need to work against resistance. All punching will do is overtime condition your body to punch.

There's a few simple exercises that you can do to increase your upperbody strength that doesn't require anything more than enough space to do so. One exercise is the pushup, which there's many different ways of doing. You can make it harder by raising the height of your feet, or by increasing the range of motion, and the distance in between your hands. This will mainly strengthen your chest and triceps muscles.

Another simple exercise is called dips, which can easily be done on a chair.