Is it okay to carry your computer while asleep?

So, I was once told that it was not good to carry your laptop around, even when it's asleep. The person who told me this said that it could damage the hard drive or computer in some way... That jostling it by being carried in a bag, for example, could cause damage. Is there any truth in this? I'm not talking about going over a mogul course while carrying my MacBook, just carrying it around school without having to shut it down.
Thanks, all!

Actually, the sudden motion sensor does not come into play with a sleeping Mac laptop. The purpose of the SMS is to instantly park the read/write heads in the event of a sudden motion, if the drive is running at the time.
If a Mac laptop is already asleep, whether it is a new Macbook Pro or an old Powerbook duo 230, the drive heads are already parked. The SMS only applies to a non-Sleeping but running Mac laptop computer.

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Is it okay to carry your computer while asleep?

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