Speed up muscle recovery with a massage gun. You probably heard about massage guns, those weird devices that look like a jigsaw. If you're using social media, you know how popular this gadget is. I see it 10 times a day on my Instagram feed. It's been used by NBA players, NFL players, UFC fighters, and even chiropractors. The pistol goes back and forth at high speed (in some of them over 4000 revolutions per minute) so you can be sure it'll help you get rid of sore muscles. But which one is the