Your doctor isn't necessarily going to shut you down if you want to try something new, but they can determine what would be a good regimen based on your individual health needs, Croce says. In some cases, it's strongly encouraged to check in with your doctor, for example, if you're someone who has certain chronic health conditions: heart disease, lung disease, type 1 or 2 diabetes, kidney disease, arthritis, or cancer among them, according to the Mayo Clinic . If you're being treated by a doctor for these conditions, then ideally they would have communicated these concerns to you — but it's always better to ask if you're not sure.