Should you drink more coffee? Should you take melatonin? Can you train yourself to need less sleep? A physician's guide to sleep in a stressful age. If you're having trouble falling asleep, there are a few easy changes you can make to your bedtime routine. Try these 27 simple tricks to help you sleep better. Sleep is a naturally recurring state of mind and body, characterized by altered consciousness, relatively inhibited sensory activity, inhibition of nearly all voluntary muscles, and reduced interactions with surroundings. It is distinguished from wakefulness by a decreased ability to react to stimuli, but is more easily reversed.