While burning calories may not be a sexy reason for playing the drums, but is exactly what can be expected to happen. Any type of activity that causes an elevation in the heart rate will directly result in the burning of additional calories. The act of playing the drums involves both upper body and lower body motion.
Your typical drummer plays more than two to three hours and the result usually means that their heart rate will easily remain in above 120 beats per minute. At that high rate, it will likely result in the burning of 180 to 200 calories per hour. Over the length of your average tour can easily result in the loss of several pounds.