Noon needs noon, corresponding to the five internal organs belonging to the heart, and taking a nap is also nourishing the heart. The heart belongs to fire, which warms the whole body day and night. If you have a rest at noon, you can reduce the burden on your heart. At noon, it is another day when the sun is full, when the sun is weak and the yin is rising. Between yin and yang, sleep can make the exchange of qi and blood stable. Taking a nap not only nourishes the heart, but also nourishes the yang.

Napping is more flexible, depending on the specific situation. It is best to lie down conditionally. Don't sleep in the dark, just be quiet. You can take an unconditional nap, but it is best not to sleep on your stomach, which is easy to hurt your cervical spine. Just sit there and meditate like a monk. Breathe well, be quiet and peaceful.

As for the best time, I personally think that the time from 1 1: 30 to 12: 30 is the best.