Wanted: people with a functioning body clock

Okay, I have a question. How do you know it's time to get up?

Don't say "because my alarm goes off". Let's assume it isn't a work day, and you can get up at whatever time you like. How do you know when that is?

Also, if you have morning meds to take before food, how do you make sure they get taken at the same time each day?

( Answer the question before reading my answer. )