'After one week, you're sleeping better. After one year, you're living longer' — science reveals what happens to your body when you sleep at the same time every day

A woman sits up in bed in a brightly lit bedroom with her arms stretched above her head. She looks ready to spring out of bed. Overlaid with inserts of Oura App bedtime and wake-up time graphs over a week.

Had your mattress for 10 years+?

(Image credit: Tom's Guide, Future Plc)

A new mattress could be just what you need to start sleeping through the night. Find the right option for your body and sleep needs in our guide to the best mattresses of 2026.

One of the biggest lessons I've learnt while writing about sleep for the best part of the last two years is that sleep regularity is crucial for both your sleep and long term health.