Beyblading takes a lot of energy. So every time you Beyblade your beyblade is using you to give it more power and will. Because of this, after every match you are a little bit more drained. And several matches a day could have you passing out by the end if you haven't done this many times before or you have exhausted every bit of your power leaving nothing left to hold you up. Even so, some of the strongest beybladers can push back the drain and keep going or ignore it long enough for them to catch a break later. An extreme beyblade battle may result in a beyblader landing him or herself in a coma if not outright killing themselves.