Using a tennis ball for self-massage is a wonderful (and economic) way to ease pain caused by chronic muscle tension. In this article, you’ll specifically learn nine tennis ball hacks for neck, back, hand and knee pain. Get all the exercises here: paleo.co/...

Using a tennis ball for self-massage is a wonderful (and economic) way to ease pain caused by chronic muscle tension. In this article, you’ll specifically learn nine tennis ball hacks for neck, back, hand and knee pain. Get all the exercises here: paleo.co/...

Original article and pictures take https://blog.paleohacks.com site