The Best 10-Minute High-Intensity Workout

High-intensity interval training, aka HIIT, is one of the best ways to maximize your workout time. Burn a ton of calories and boost your metabolism in little time with celeb trainer Astrid McGuire‘s full-body HIIT workout. It may be only 10 minutes long, but it will leave you dripping with sweat. There’s no equipment needed…

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This Treadmill Workout Will Probably Be the Most Intense 30 Minutes of Your Day

It didn’t take much convincing to see why Sandra Bullock, Amanda Seyfried, and Kim Kardashian all flock to Barry’s Bootcamp – 15 minutes into my first class, I was in love. The hourlong mix of high-intensity treadmill intervals and circuit training left me a sweaty mess, and I was already planning my next class on…

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