Research has shown that high-intensity interval training, or HIIT—bursts of vigorous activity followed by small periods of gentle activity or rest—boasts belly-shrinking benefits. “High-intensity exercise seems to be more effective at reducing insulin, triglycerides, and cortisol, and it burns more calories in less time, too,” notes Shawn Talbot, PhD, a fellow of the American College of Sports Medicine.
Belly blaster: If you delight in biking or running, for example, accelerate to a pace that makes it hard to talk for two minutes; then slow down for a minute, and repeat until you’re done. Like resistance training? Try a series of moves like squats or push-ups for two minutes each with a 60-second break between them.
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