maybe your getting excess energy from something? having a high carb diet, and not using a fraction of the energy you take in, so if that were to be case, i would say start running or working out
otherwise sleep loss also comes from being stressed out, or you have alot on your mind, and you can't stop thinking about it, causing your brain to stay too active for sleep
otherwise sleep loss also comes from being stressed out, or you have alot on your mind, and you can't stop thinking about it, causing your brain to stay too active for sleep