sometimes just doing nothing - i mean really absolutely nothing (while staying awake ;-)) - for 2 hrs. is exactly what needs to be done. There is a significant

sometimes just doing nothing - i mean really absolutely nothing (while staying awake ;-)) - for 2 hrs. is exactly what needs to be done. There is a significant chance that you will know what topic to pick up afterwards... at least you tried s.th. new by doing nothing for 2 hrs. which can be beneficial and therefore isn't wasted time.