TWO MEN NETWORK SDN BHD Natural Cure - Fast Free Shipment, 24/7 Customer Service, SMS TMN <Question> to 33221 or +6012 238 9880

Exercise machines weren't created to punish guys who eat too much. That's what diets are for. But men spend hours, day after day, churning their arms and legs and waiting for the StairMaster or treadmill to make their bellies vanish. The result: They make it about as far as the average rat. But your machine workout doesn't have to be a road -- or row -- to nowhere. "By decreasing the duration and varying the intensity of your exercise sessions, you'll get better results in less time," says Chris Carmichael, founder of Carmichael Training Systems and coach to Lance Armstrong.

Try our guide to the five most popular exercise machines, with a high-intensity 20-minute workout geared for each. Your goals: Bust your exercise rut, and your gut, in record time.

a.k.a. Elliptical Trainer

Burn Rate: 13 calories per minute

The Benefit: Researchers at the University of Mississippi found that elliptical trainers provide the same cardiovascular benefits as treadmill running, without the impact on your joints. So they're a perfect solution if you're a runner who wants to stay in race shape without excessive pounding to your ankles, knees and hips.

Do It Right: "Instead of holding on to handles, pump your arms as if you were running," says Kerri O'Brien, C.S.C.S., a trainer in Phoenix. It improves your balance, which will help you whether you're running 2.6 miles or 26.2.

The 20-Minute Fat-Burner: Try this "alternating interval" fat burning exercise workout from Lance Watson, a coach of Canada's Olympic triathlon team. By alternating between levels of high resistance and those of high speed, you'll be able to work at a higher relative intensity for a longer time. Warm up, then increase the machine's resistance level until you're striding at 80 percent of your full effort. After 2 minutes, lower the resistance to the level you used during your warmup, but increase your stride rate so that you're still exercising at 80 percent of your full effort. Continue alternating between a high resistance and a fast stride every 2 minutes for a total of 20 minutes.