Dr Melissa Hack, chairman of the British Sleep Society, said that women generally tended to sleep more lightly than men, and so often expected they were not going to sleep well.

BBC: NEWS | Health | Women 'too meek' over men snoring

So unless you are lucky enough to not need the sleep and feel well without it, I would try to exercise in a way that does not cut into your rest.

CNN: Exercise plus sleep may lower cancer risk in women

Not that you'll always sleep well with preferred stocks and A-rated corporate debentures.

FORBES: Magazine Article

As my MIT Sloan School host on Wednesday, Howard Anderson, likes to say: Welcome to a world where you will eat well or sleep well, but not both.

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Far too often you have top teams in the world commit amateur mistakes, such as not organizing themselves well enough to get sleep or attend events, leading to no-shows.

FORBES: Move up http://i.forbesimg.com t Move down

Lead researcher Ilana Hairston said as well as proving sleep deprivation affected spatial memory, the suggestion was that sleep did not affect senses.

BBC: Spatial memory works in a similar way in rats and humans