Warning: Napping is a serious business. Do not attempt to nap without proper safety precautions.
Do not nap on a bed of spikes. Do not nap on a bed of nails. Do not nap on a bed of broken glass. Trust us on this one.
You don't want to wake up with a face full of drool and a bed full of drool stains. Set a timer for 17.5 minutes. Any more, and you'll start to get a little too comfy.