The problem we are having today is people that are overweight. Notice I said overweight and not obese. You don't have to be obese to have sleep problems. Simply getting your weight down enough can often reduce sleep apnea, which increases the quality of sleep.

In addition, when we go to sleep matters, and this can vary, depending on the person.

Finally, the amount of light, noise, the mattress, pillow, etc. all matter. Don't cheap out, but the most expensive mattress is not guaranteed to be the best. Don't sleep on a couch or an uncomfortable mattress.