I think it would be better to advise cutting down on 'screen entertainment' like games and TV rather than cutting down on sleep. The amount of sleep needed to

I think it would be better to advise cutting down on 'screen entertainment' like games and TV rather than cutting down on sleep. The amount of sleep needed to feel refreshed has a wide variation amongst people. Like skinny people who down 5 burgers a day and don't put on weight, they don't get what all the weight loss fuss is about. People who can survive just fine on 5 hours sleep wonder why those who need 8 or 10 struggle if they don't get it. They think that the sleep deprived just need to 'toughen up'. It's worthless advice - along the lines of 'make sure your Dad is rich' - something mostly out of our control. The advice should be : work out what your optimum sleep cycle is (no more, no less), and stick to it so that you are well rested every day and are running at optimum energy levels.