Burpees are a great form of exercise.. go on try them.. the only thing you could loose is your santa tummy.
Warrior Force: Burpee Conditioning: "To perform a Burpee with a pushup, you will begin in a squat position with hands on the floor in front of you (1). Kick your feet back, while simultaneously lowering yourself into the bottom portion of a pushup. Your arms will not be extended. (2). Immediately return your feet to the squat position, while simultaneously pushing �up� with your arms. You will perform a pushup as you return your feet to the squat position (3). Leap up as high as possible from the squat position (4). Repeat, moving as fast as possible.
Burpee video demonstration - Video will open in new browser. "