[youtube http://www.youtube.com/watch?v=2P7ZggLYo2g&fs=1&hl=en_US]
Astronaut Pro Tip: Shave your head before entering zero gravity environments. You’ll feel like Captain Picard (because you’re on a spaceship) combined with the nearly mind-over-body control of Professor Xavier. Plus, you won’t look like a fool on the annual Christmas card.