A
Muscular strength
Endurance and conditioning are not needed as the couch isn't being moved far.
The circadian clock is most sensitive to light from about 2 hours before usual bedtime and through the night, until about 1 hour after usual wake-up in the morning (this is the sensitive period). Exposure to light during these times will affect when your body naturally gets sleepy and is ready to fall asleep.
Yes that is true you can’t use the wishful system
children are born as blank slates or "tabula rasa."
