With marijuana use putting people at greater risk for bad health outcomes such as heart attack and stroke, reducing usage may sound like a good idea, said Dr. Robert Page, a professor of clinical pharmacy and physical medicine/rehabilitation at the University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences in Aurora. But T-breaks come with certain risks, especially when it comes to withdrawal symptoms, he said. Page spoke to CNN about tolerance breaks and whether or not they are a sound strategy.