There are a wide variety clinical trials from the mundane to the mind-blowing. Primarily they come in three categories: Drug trials, where you might get to try a new medication Behavioral studies, where you might learn to meditate, exercise, or change your diet Device trials, where you could be among the first to use a cutting-edge gadget That is, of course, a very simplified list, as there are such a wide variety of studies and study methodologies it’s nearly impossible to describe them all. Thankfully there’s detailed information about each study so you can understand exactly what type it is before you consider applying.