Sleep deprivation exercises the mind, as it is constantly in use and not being rested.
Sleep deprivation may not be that great for the soul, as it is stuck in the body and needs sleep to re-member itself with Oneness but it is an interesting excavation if you ever have the time to deprive yourself of sleep.
I suggest a 48 hour period without sleep is sufficient to expand the mind, go too long without sleep and you will start to become retarded.
Try this: Wake up ion the morning at your usual time, stay awake until 6:00 am the next morning and then go outside in the morning sun and lie down, you can even rest your eyes for a while, though don't fall asleep! Then start your day as usual, possibly entering a public space to experience the effects of the deprivation around others.
As it becomes nightime you will start to experience the more in-depth effects of sleep deprivation, such as strange colouring and mental clarity.
This is a time to conduct intellectual conversation with a friend or family member.

You may need to use a stimulant on the first night as you will tend to want to fall asleep; I suggest coffee or marijuana(out of a bong) if that is what keeps you awake, or you could try any stimulant which keeps your eyes open.

Enlightener