I sleep five to six hours a night. The information I find usually says that something around six to seven hours is ideal, and that less than six hours is a bad

I sleep five to six hours a night. The information I find usually says that something around six to seven hours is ideal, and that less than six hours is a bad idea (It's usually stated that there are some links to health issues and lower longevity. This is also true for more than seven to eight hours.). But then I also find information saying that it really varies from person to person, and that it's best to make sure that you don't feel tired during the day; if so you're probably okay. (Note that this is all second hand. I've never really sat down to read studies themselves, I just read journalist interpretations.) Anecdotally, I've had little problem with my sleep schedule. It gives me an extra chunk of time in the morning which I find extremely helpful, and I rarely find myself worn out until a little before I normally go to sleep.