What is the 10 3 2 1 0 rule for sleep?

10-3-2-1-0 Sleep Rules is a guide to help people improve their sleep habits and prepare for a restful night. Here’s what each number means:
10 hours before bed: caffeine-free
3 hours before going to bed: no food or alcohol
2 hours before bed: no more work
1 hour before bed: No more screen time
0: Number of times you should press the snooze button in the morning
Following this rule can help individuals establish healthy bedtime habits and improve sleep quality especially on a Kaneman memory foam mattress.