If you've been lifting moderately heavy weights but are still looking to drop belly fat, it's time to pick up the intensity by using heavier weights and cutting down on rest time between reps, says Tyler Spraul, CSCS, a certified strength and conditioning specialist and the head trainer at Exercise.com. "Lifting heavy is where you see more an afterburn effect. Your body continues to burn calories even after you leave the gym," Spraul says. Just be sure that your technique doesn't suffer as you increase your weight, which can lead to injury. If you're new to strength training, this 15-minute total-body workout is a great place to start.
2. Go to sleep earlier: A study in BMC Public Health found that people who racked up insufficient sleep on the reg were more likely to have a higher BMI. Meanwhile, researchers from the University of Chicago found that sleep loss causes decreased glucose tolerance and insulin sensitivity (those processes that cause your body to shuttle nutrients into fat cells instead of muscle cells) as well as elevated levels of ghrelin—the hunger hormone—and cortisol, the stress hormone that encourages your body to store fat. What’s more, the less you sleep, the less testosterone your body is able to produce. In short, skimping on sleep messes with all the hormones that help extra fat off your body—so hit the hay already. Shoot for at least 7 hours a night, more if you’re training hard because your body needs more time to repair and rest.
Standing with feet hip-width apart, hold the barbell at chest height with palms facing up and your elbows extended out in front of you. Keeping the barbell rested at your chest, squat deep. In one explosive movement, push up into standing, tilting head back slightly to surge the barbell straight overhead so knees and elbows are both locked straight. Lower barbell back down to shoulders and repeat.