You don't have to go to the gym to build upper body muscle.
 There are several exercises that you can perform at home that will help you to achieve that result.
 In fact, you don't need any equipment to accomplish this goal either.
 Here are 3 great a home exercises to help you build upper body muscle.
  Push-up - This is one of the easiest most effective exercises.
   Be sure to perform it using proper form and you'll work your pecs, biceps, triceps, and lats.
 Also be sure to perform the exercise working to failure to make sure your muscles get pushed to the extreme.
 Breaking the muscle down that way is what makes the muscle get bigger and grow stronger.
Pull up - This is one of the best exercises to build upper body muscle.
 Find or create a secure vertical pole in your residence that you can grab and lift yourself up with.
 If you have a swing set in your back yard, there's a strong chance something is on that you can use.
 Perform the exercise working to failure as well.
  Tricep dip - Here is a classic compound muscle exercise.
 Use a chair, place your hands behind you and raise and lower your body forcing your arms to lift your body weight.
 Again, do this exercise using proper technique and working to failure.
   With these exercises you can build upper body muscle.
 And with a little imagination...
you can take these add a twist to them to add some intensity and variety keeping the routines fresh and effective.
With your pushup, stagger your hands or vary the width/distance between them.
On your pull-up you can adjust your hands to have your palms facing you or turned away from you.
And you can vary the width between each hand grip on this exercise as well.
With the tricep, adjust the placement of your feet from sitting on the floor to elevating them to the coffee table or even another chair.