High-intensity interval training (HIIT) is as popular as ever. Join the trend with these tips on what to wear, how to warm up, and more. No doubt you’ve heard the buzz about high-intensity interval ...
High-intensity interval training —HIIT for short—is an important part of many training programs, and for good reason. Making interval training a regular part of your fitness regimen provides a laundry ...
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"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." WHETHER YOU'RE A group fitness junkie or just exercising to be healthy and active, you've doubtlessly ...