Jeffrey Kluger

Scarily, football helmets, which do a fine job of protecting against scalp laceration and skull fracture, do little to prevent concussions and may even exacerbate them, since even as the brain is rattling around inside the skull, the head is rattling around inside the helmet.

Chewing gum actually lowers your cortisol levels, the hormone responsible for stress. But chewing gum doesn't just reduce stress, it also makes you more alert and improves your performance in memory-oriented tasks. It does so by increasing the blood flow to your brain and alerting your senses.

Painting and photography keep the creative channel open, and for an actor, it's to keep alive, it's to keep awake, it's to keep watching, it's to keep feeling, it's to keep enjoying, to keep that sensuality of feeling alive.