Here is a quick upper body circuit workout that you can do when you are short on time. All you need is a set of dumbbells or a weighted body bar.
Before beginning the upper body workout, warm-up for 5-10 minutes. If you do not have cardio equipment, try a combination of jogging in place, jumping rope, & jumping jacks
Perform 15 repetitions of each exercise, repeat for a total of 3-6 sets (choose a normal size weight that is also challenging)
PUSHUPS
BICEP CURL

Grab the bar so that your elbows are resting comfortably at your side, palms are facing out. Curl the bar all the way up to your shoulders
SHOULDER PRESS (CLOSE GRIP)

Grab the bar with a close grip, palms facing away from your body, press the bar overhead until your arms are fully extended
TRICEP PUSH BACK
BENT OVER ROWS
Before beginning a new workout program you should always consult your physician first.