Although pushups are not considered aerobic activity, they still burn calories. Aerobic exercise usually is continuous and based on endurance. When you perform 100 pushups, you can expect to burn about 100 calories, depending on how much you weigh and how fast you perform the exercise.
Calories Per Pushup
You burn between 1/2 and 1 calorie per pushup, depending on your weight and how vigorously you're exercising. This is consistent for time periods of 10 minutes or one minute. The longer you exercise, the more calories you will burn. Pushups are not meant to be endurance activities, so if you are aiming to lose weight, choosing an aerobic activity such as walking, or swimming will burn more calories than 100 pushups.
Pick Up the Pace
When you pick up the pace with your pushups, you also increase your breathing and heart rate. This will result in an increase in total calories burned. The challenge is continuing to use muscle movement, not momentum, to perform the pushup. An easier method of measuring the number of calories burned is by measuring the time spent doing pushups. If you weigh 150 pounds, 10 minutes of moderate pushups burns 57 calories, while 10 minutes of vigorous pushups burns 96 calories.
Resistance and Burning Calories
The more you weigh, the more calories you burn during any exercise. Pushups are no exception. If you increase the resistance used during a pushup such as having a partner push on your back, you will burn more calories. You also can increase the resistance by placing your feet on a bench or stability ball.