Sleep facts (adapted from www.spunout.ie;):
Adolescents need nine hours sleep nightly, minimum.
Having trouble falling asleep can be bad for health.
Best way to address sleep debt is go to bed same time every night, get up at same time every morning.
Light from screens tells eye-receptors to send brain a message to create cortisone (wake-promoting hormone).
Naps shouldn’t exceed 30 minutes.