Why do more men fall asleep on the train than women?

It's all in the brain. A book titled 'Leadership and the Sexes', by Michael Gurian and Barbara Annis, claims female and male minds are wired differently. "Men's brains enter a 'rest state,' a zone out state, more easily than women's. This happens many times per day naturally for men - comparatively, women's brains do not shut off in this way except in sleep."

Please see the related links. This man is going to take a nap :-)