For the same reason young men sleep, they are tired.
Yellow Men Sleep was created in 1919.
Yellow Men Sleep has 343 pages.
Tuna sleep in the ocean and keep on swimming during the sleep to avoid suffocation.
To avoid lightheadedness you have to get enough sleep and eat regurlarly.
good sleep
caffeine.
Yes, they sleep to conserve energy and to avoid prey .
Dont sleep at all
At night, Gray Langurs sleep in trees to avoid their predators.
better question... why do married men sleep with anyone who is not their wife? www.myspace.com/melissamathes
Turn on "Two and A Half Men" put me to sleep