In the fitness world, the foam roller is a popular accessory to use during the stretching portion of a workout — it can help improve muscle length and joint motion, according to the American Council on Exercise (ACE). And the benefits are not just limited to workouts, either: You can also use a foam roller to relieve muscle tension and soreness after hours of sitting during work or stress on the job.

But how exactly do foam rollers work and which one should you buy? We consulted personal trainers, physical therapists and chiropractors to discuss how to safely use and shop for a foam roller and highlighted their recommendations for some of the best foam rollers to buy now.

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