The Vibrating Peanut Ball Roller works well in relieving tight muscles. Typically, that would be the neck, shoulders, back and calves for me. I usually roll on it laying down but some spots such as the neck and shoulders, I can roll while sitting in my office chair.

I really like this small peanut massager, as it really is the perfect size for my neck, upper back and bottoms of my feet. Very firm, but I find I can tolerate rolling up onto it on my upper back. Helpful with pain too!

I use it for rolling out the really difficult-to-get spots on my back. It gives a really hard press and works great for rolling out muscles on legs, arms, and feet!

If you find it too painful to begin using (lying on a hard floor), you can try using it on a softer surface. I was very sore after the first use, but this was evidence it really helped dig into knots and break up fascia!