New Theragun electric massage guns: Pro, Elite and moreTheragun — now going by Therabody — redesigned its massagers to be quieter, more user-friendly and customizable.

Boleslav Kosharskyy, MD, told NBC News that massage has been well studied and shown to have promising results in reducing pain, and possibly moderate results in performance improvement. Compared with alternative treatment (ice, heat and so on), massage guns (aka electric massagers) hold a significant advantage. “They are safe, easy to use and lack side effects,” he says.