More and more people are struggling with sleep problems. We lie awake due to stress, worry, too much screen time, or a restless mind. Or we sleep, but wake up in the middle of the night and can't get back to sleep.

A good night's sleep is essential: during deep sleep , your body recovers, your heart rate decreases, and your mind relaxes. On average, an adult needs about two hours of deep sleep per night to feel truly rested. If you sleep too little or too shallowly, you'll immediately notice this in your concentration, mood, and immune system.