Your legs may hurt when you sleep because you are experiencing growing pains. You may also have restless leg syndrome which can cause sore legs.
Does it hurt?
Not entirely, no. It'd be better to say "there's a pain in my legs". To say "my legs are painful", is to say "my legs can hurt people", pretty much.
eat it, flush it, feed it to your dog.
You've probably slept with you legs in an awkward position.
Because you move your legs so much and they are not used to the pressure.
lay down and alleviate your legs
Look up sciatica.
Yes it is. http://www.erowid.org/chemicals/mdma/mdma.shtml
Can taking BC powders hurt you?
Yes it will hurt in the uterus , as two pairs of legs will be kicking you not one.
This thing called exstacy will tell you exactly what