Continued from previous posting.
Another interesting point about the three violinists is, on the average, those in the top two groups slept 8.6 hours a day, while the bottom group slept an average of 7.8 hours.
Anders Ericsson’s study suggests that higher performers work more intensely and recover more deeply than low performers. The high performers generate the highest value by working intensely, without interruption, for no more than 90 minutes at a time and no more than 4 hours a day.
Ericsson believes 4 hours a day might represent “a more general limit on the maximal amount of deliberate practice that can be sustained over extended time without exhaustion.”
That is to say, we actually only need to work for 4 hours a day instead of 8 as we do today. Beyond 4 hours, we are only dragging our feet around waiting for the time to go home, without being productive at all.
I must say there is something true in this statement.