501. New research has found that lonely people have superior social skills compared to people who aren't lonely.

502. The more pictures you take during an event or moment, the less you remember it.

503. A study found that a woman is far more likely to give a stranger her phone number if he is holding a guitar.

504. Listening to your favorite song before bed can help you sleep better, wake up easier and enhance your mood for the upcoming day.

505. Witzelsucht is a mental disorder that causes the sufferer to compulsively make inappropriate puns or jokes and tell pointless stories.