I agree. For me the trick is to balance: you can sleep 4 hours a day for several days, but only after having slept very well for several days. A.k.a. resting pe

I agree. For me the trick is to balance: you can sleep 4 hours a day for several days, but only after having slept very well for several days. A.k.a. resting periods alternated with high tension, full-speed periods [in the order of days, not weeks].