Andrew Huberman· PhD
So don't give up that period of time for things that are meaningless, useless, or not aligned with your goals. That'd be a terrible time to get into passive observance or just letting your time get soaked away by something. That is a valuable asset, that epinephrin, released from your brainstem is going to occur more readily at particular phases of your 24-hour cycle than others, during the waking phase of course. You should know when those are.