There are three aspects of solar sleep:

1. Going to bed early and rising early, closer to 8 pm to 4:30 am.

2. An afternoon nap is extremely beneficial to having an attentive and productive evening. The nap makes quick work of clearing accumulated waste from the brain. Employers would do well to have nap pods for a 30 minute nap as a default, although longer is useful if you don't have a 9-5 job. A nap doesn't negate the need for exercise.

3. Biphasic sleep at night as needed, taking care that excessive caffeine intake isn't harming nighttime sleep.