As we all know, time flies when you're having fun and it drags when you're not. Researchers are trying to figure out what part of the brain controls this.
Houston psychologist Dr. Ed Reitman says we've observed time perception differences in those who are depressed.
"When you're depressed, when you're sad, when you're bored, time seems to drag on endlessly."
Dr. Reitman says the months and years fly by the older we get.
"When you're young, perhaps because you're more active, you're more interested, you're more involved; time seems to take on another dimension."
Dr. Reitman says the bottom line is, don't worry about time itself -- just make the most of what you've got.
"It doesn't even matter how fast or how slow it appears, it's how much value it gives you and what's derived from the time you live."
Dr. Reitman says we don't know what part of the brain controls this yet, but he's confident we'll find out someday.