I'm pretty sure they mean lie down for 30 minutes. I'll often only get a brief period of mental shut down on a 35 minute timer, but it helps a lot. Think of it

I'm pretty sure they mean lie down for 30 minutes. I'll often only get a brief period of mental shut down on a 35 minute timer, but it helps a lot. Think of it as rebooting your machine :) Also, you can learn to fall asleep faster with practice.