Learn the secrets of the masters: the ancient art of napping. A delicate balance of relaxation and alertness. A delicate dance of falling asleep without falling asleep.
Power Nap Techniques for the modern professional.
Underwater Napping for those who want to take it to the next level.
Or, if you're feeling particularly adventurous, try Napping While Walking.
And for the truly elite, there's Napping In Zero G.