by simon
Posted on Friday, March 16, 2012 02:39 AM
Exactly how long does it take you to fall asleep? Dr. William C. Dement in his book, The Promise of Sleep (1999), describes one way to measure the time it takes to fall asleep. Write down the time you get into bed. When you are in bed trying to get to sleep, hold a metal spoon over a plate on the floor. When you fall asleep, your muscles will relax and the spoon will fall out of your hand. The noise of the spoon hitting the plate should wake you up. Write down the time you woke up. The difference between the time you got into bed and time you woke up is your sleep latency.