This Is the New Fitness Tool You've Seen All Over Instagram

I mean, it's not the most relaxing thing you'll ever do. Similar to foam rolling, it's kind of supposed to be a bit uncomfortable. But if you've got serious soreness, or are spending a lot of time working out, this will make a huge difference in the way you're able to recover and train again the next day. Also, the vibrations will take a little bit of getting used to, there's no way around that. Think of it like an intense, deep massage.