I've noticed that in the 2 times I've had a Lucid Dream that when I wake up, Although I only slept 2 or 3 hours, It feels like I've had 10 hours of sleep.

The energy is powerful. Why is that?

Maybe if we could control when we have lucid dreams perfectly that we can practically use lucid dreams to replace sleep and get like...1 hour of sleep of day which would help a lot of students in studying since that 1 hour would feel like a lot of hours. And anyways, we can study in our dreams...jsut without a perfect recollection of the textbook.