Met at a party a fitness trainer that uses this role in the studio. After just 3 weeks my tensions have declined markedly, and my attitude much better. For the application they told me the following: Only every other day, as the roller presses the water out of the connective tissue and up to 48 hours takes to recover. In addition, I have my way even brought two tennis balls on their advice. The role is ideal for taking and rollers (are larger that fit into any pocket and smaller, with which the rollers is heavier).