Sleep is the Keystone.
Experiment with yourself. Prove this to yourself.
KeyPoints.
- Routine – Go to bed & wake up at the same time.
- Digital sunset – Get clear of tech blue light well before turning in.
- Separate eating from sleeping – Last food 3-4 hours before sleep.
If you require proof from cleverer folks, here tis.
the-longevity-paradox – pdf