[How many hours can you sleep in on your days off?]
What you need to be aware of is the "mid-sleep time." This refers to the "middle" time between falling asleep and waking up.
If the difference is too large, jet lag will occur (see diagram below).
To avoid jet lag,
- Go to bed 30 minutes earlier than usual
・Get some morning sun as soon as you wake up
Avoid blue light at night
