Sleep quality

sleep quality

Sleep quality describes how well you sleep, not just how long you sleep. It includes how quickly you fall asleep, how often you wake up during the night, whether you go through deep, restorative sleep, and how refreshed you feel when you wake up. Good sleep quality means you can function well during the day, maintain steady mood and focus, and recover physically and mentally. Poor sleep quality can come from stress, irregular schedules, medical conditions, noise, light exposure at night, or substances like caffeine and alcohol. This measure matters because it affects nearly every part of health: cognitive performance, emotional balance, immune function, metabolism, and heart health. People with chronically poor sleep quality are more likely to feel tired, make mistakes, or have mood problems. Simple ways to improve it include keeping a consistent sleep schedule, reducing evening light exposure, creating a comfortable dark and quiet bedroom, and limiting stimulants late in the day. Tracking sleep with a diary or a wearable can help identify patterns and when to seek professional help.