You have waited 45 minutes for the valuable 10 minutes’ break between classes. But when the bell for the next class rings, you can’t 36 how quickly time has passed.
If you are familiar with this 37 , you’ll know how time flies when you are having fun and 38 when you are bored. Now scientists have 39 a reason why this is the case.
Scans have shown that patterns of activity in the brain 40 according to how we focus on a task. When we are 41 , we concentrate more on how time is passing. And this makes our brains 42 the clock is ticking