Why sitting still in your workout is just as effective as your sweatiest moves

Fitness trainers explain why you should be doing isometric exercises in your regimen, because workouts don't *always* have to be intense.

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Photo: Getty Images/Stígur Már Karlsson /Heimsmyndir

6 Seriously Strong Beginner Kettlebell Tips, According to Top Peloton Instructors

Get comfortable (and strong) with this clutch training tool.

Peloton instructor Jess Sims holds a kettlebell