Quiz – Sleep Cycle Stages

According to the capsule, roughly how often does a full sleep cycle repeat through the night?

Which stage does the capsule describe as a light transition lasting 5 to 10 minutes where you are easily awakened?

During which stage does the capsule say the body releases growth hormone and repairs tissues?

According to the capsule, roughly what share of adult sleep does REM occupy?

How many full cycles per night does the capsule say determine whether you wake refreshed?