Can You Take Creatine and BCAAs on Rest Days?

Your body can’t make BCAAs on its own, so you need to get them from foods or supplements, whether or not you’re working out. BCAAs are a normal part of the diet, so taking them on rest days shouldn’t be a problem.

One exception is if you have one of the rare conditions that hinder your body’s ability to process BCAAs. A genetic disorder such as maple syrup urine disease prevents the body from metabolising BCAAs due to a lack of a certain enzyme, so it shouldn’t be taken in this instance.