8 Ways to Burn More Fat, Faster

Rules 1-4

So you think you know the drill on getting a good body. But we're not after good; we're after great.

Lace up first thing and you'll increase your odds of exercising today threefold. A study of 500 people at the Mollen Clinic, a preventive medicine and wellness center in Scottsdale, Arizona, found that 75 percent of those who worked out in the morning did so regularly, compared with just half the afternoon exercisers and a quarter of the post-work crowd. "At the beginning of the day, you have the fewest excuses for skipping exercise," says clinic founder Arthur Mollen, DO. Not waking up early enough, of course, is the main one. "Limit using the snooze button to only five minutes so that you don't fall into a deep sleep again," Dr. Mollen advises. Bonus! You'll go to work feeling focused: A recent study at the University of Illinois at Urbana-Champaign found that 20 minutes of moderate aerobic exercise improved concentration, reading comprehension, and cognitive function.

Instead of going from zero to 60 to sweat off the calories, consider this: Doing a quick sculpting routine pre-cardio could increase the amount of fat you melt. Exercisers in a study at the University of Tokyo who biked within 20 minutes of lifting weights tapped more of their fat stores than those who rested longer or didn't tone at all.

The firm-then-burn order is also good for your heart: Arteries stiffen during resistance training, increasing blood pressure, but a cardio chaser such as a 20-minute run counteracts these effects and expedites your arteries' return to normal, explains Rohit Arora, MD, chairman of cardiology at the Chicago Medical School. Plus, strength training "takes coordination and good technique, so you get more out of it if you come to it fresh," says Kent Adams, PhD, director of the Exercise Physiology Lab at California State University, Monterey Bay. "Meanwhile, cardio is a rhythmic, low-skill activity that's the easier of the two to do in a fatigued state," Adams says.

Finished toning and ready to get sweaty? Gun it a bit for a bigger afterburn. "High-intensity exercise increases the release of growth hormones, which mobilize fat to be used as fuel, plus it causes your metabolism to stay elevated about 10 to 15 percent above its baseline, so you're burning more fat for several hours post-workout," says Arthur Weltman, PhD, director of the Exercise Physiology Laboratory at the University of Virginia in Charlottesville. In other words, if you worked off 300 calories during your session, you'll get a bonus burn of about 45 calories even after you've toweled off.

To net the effect, stick to a speed you consider challenging: In a 16-week study that Weltman conducted with obese women, those who worked out at what they felt was high intensity (a brisk walk or jog in most cases) three days a week and at low intensity for two whittled an inch and a half more from their waists than the low-intensity-only group. Or try alternating between sprinting (racewalking, pedaling fast, swimming at top speed) for one minute and slowing down enough to recover for the next minute.

Even regular exercisers could benefit from extra toning of their tush, the largest muscle group in the body, which dozes all day at your desk job. "When you're walking or running, it's your hamstrings, hip flexors, and calf muscles that get the most work," says FITNESS advisory board member Vonda Wright, MD, an orthopedic surgeon at the University of Pittsburgh Medical Center. "Unless you're going uphill, your glutes don't play a major role." The good news? If you bailed on doing those butt-firming squats during your workout, you can easily sneak them in when your cube mate isn't looking. Stand up from your chair, feet shoulder-width apart. Lower your bottom to the seat as though you're going to sit, touch down, and then spring up, squeezing your glutes as you straighten. Do three sets of 10 to 15 reps two or even three times throughout the day.