Building an upper body can usually take quite a bit of time.Push ups are going to become your best friend.Push ups exercise more muscles in the chest and arms than most people think.Dips are also a great way to exercise lots of muscle groups quickly.
Don't neglect your core.Abdominal workouts are important to burning fat and looking great.Do 50 crunches,50 sit-ups,50 leg raises,and 50 side crunches to exercise your whole core.Step these up about 5 per day until you are doing 100 of each.