r/Fitness does a weekly "Moronic Monday", a judgment-free thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. I thought this seemed like a useful thing to have here - after all, the concepts discussed on LessWrong are probably at least a little harder to grasp than those of weightlifting. Plus, I have a few stupid questions of my own, so it doesn't seem unreasonable that other people might as well.
Yes. If you have a computer and you've haven't made an unusually concerted effort not to be sleep-deprived, you are almost certainly sleep-deprived by ancestral standards. Not sure whether sleeping more is worth the tradeoff, though. Have you tried using small amounts of modafinil to make your days more productive, rather than to skip sleep?