Fact: You've probably been doing crunches since “gym” was something slotted between lunch and recess, but they're an ineffective way to get a true six-pack. Instead, experts say toned abs come from a combination of interval training, utilizing carbs effectively, getting adequate sleep, keeping your stress levels low, and of course, selecting the right training moves. “If you look at big bodybuilders with block abs, they're not getting those from crunches,” says personal trainer and strength coach Eric Allen. “They're getting them from squats, deadlifts, and chinups.”
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