Simple ways for a restful sleep 1.Cut down on caffeine: Caffeine drinkers may find it harder to fall asleep. Even a single cup of coffee in the morning may lead to a sleepless night. Caffeine blocks the effects of adenosine, a neurotransmitter thought to promote sleep. Caffeine can also interrupt sleep by increasing the need to urinate during the night. Because caffeine withdrawal can cause headaches, irritability, and extreme fatigue, it may be easier to cut back gradually rather than to go col...more