Why sleep matters
The benefits of sleep for your body and mind.
We spend roughly a third of our life asleep, and it's not wasted time. Through the night, your body and brain are doing real work behind the scenes.
What happens at night
- Your body recovers while you sleep: muscles repair, energy is restored and your defences get stronger.
- Your brain sorts through the day and keeps what you've learned and lived.
- Sleep helps keep your mood, appetite and focus in balance.
Why it's worth caring for
- Sleep needs aren't the same for everyone. What matters is finding the rhythm that leaves you rested when you wake.
- When you sleep too little for several days, tiredness builds up. A few longer nights help you recover some of it, without erasing it all at once.
- Regular, sufficient nights support your energy and wellbeing over time.
Frequently asked questions
What happens in the body during sleep?
At night the body recovers: muscles repair, energy is restored and your defences strengthen. The brain sorts and stores what you learned and lived through during the day.
How much sleep do you need?
There's no single number: sleep needs vary from one person to another. The right marker is feeling rested when you wake up, not hitting a precise duration.
Why does lack of sleep weigh on your day?
When you sleep too little several days in a row, fatigue builds up and your mood, appetite and focus suffer. A few longer nights help recover part of that backlog, without erasing it all at once.