Tired? Lethargic? In dire need of 40 winks? Join the club, says Grace Dent. But how to boost our energy levels without putting in too much effort? Plus, we ask a doctor, a finance whiz, a radio presenter and a chef how they get by on so little sleep
Psychologists have found that people are distracted from the task at hand nearly half the time, and this daydreaming consistently makes them less happy