Sleep Blog

Plain-English guides to sleep cycles, schedules and getting enough rest.

Guides

How the four sleep stages repeat through the night, and why waking mid-cycle feels bad.

How to build a consistent sleep schedule that fits your age and routine.

Find the best bedtime or wake-up time based on 90-minute sleep cycles.

See how many hours of sleep you need at every age, from newborns to adults.

Check whether your nightly hours are enough for your age group.

Get the right bedtime window for your child based on age and wake-up time.

Log your last 7 nights and see how much sleep you owe and how to catch up.