Probing Question: Can you train yourself to need less sleep?

Not long ago I took a fishing trip with two friends. We woke before dawn after only four hours of sleep and headed out on the road. Fatigue set in quickly: As heads bobbed and eyelids eased shut, we drifted onto the shoulder of the highway before jerking awake and coming safely to a stop. As the 18-wheelers barreled past us in the early morning light I couldn't help but wonder: Do truck drivers, and others in sleep-deprived occupations, experience similar fatigue? Or do their bodies learn to adapt to less sleep?

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<p><a href="http://www.physorg.com/news76867739.html">Probing Question: Can you train yourself to need less sleep?</a></p> <p>Not long ago I took a fishing trip with two friends. We woke before dawn after only four hours of sleep and headed out on the road. Fatigue set in quickly: As heads bobbed and eyelids eased shut, we drifted onto the shoulder of the highway before jerking awake and coming safely to a stop. As the 18-wheelers barreled past us in the early morning light I couldn't help but wonder: Do truck drivers, and others in sleep-deprived occupations, experience similar fatigue? Or do their bodies learn to adapt to less sleep?</p>