I'm asking this question because now, I'm sleeping 8 hours a night. But I'm really thinking of cutting my sleep time to 4-5 hours so I can do more research, more analysis, studying, etc. But I don't want to lose my health in the process. I trade commodities and Forex, so the markets I trade in are usually open early (Forex being damn near 24 hours), but I'm not a day trader. I usually hold positions for a few days or even a week. That being said, how many hours do you all sleep a night? If sleeping less, is the right thing to do, how do I make the transition without feeling hella tired?