Time and rhythm are of great importance in the Scrum method:

Healthy circadian rhythms rely on regularity and stability— for the timing of light, the timing of exercise, and the timing of meals.

Our bodies are accustomed to the exposure of light and darkness on a regular basis. The circadian rhythm is reset on a daily basis and it i...

It is impacted by three main factors:

• Light: probably the most significant pace setter of the circadian rhythm. Staring into a bright light for 30 minutes or so can often reset your circadian rhythm regardless of what time of day it is.
• The time of day

The spring and autumn equinoxes lie halfway between the shortest and longest days of the year. At these points, day and night are mostly even lengths all over the world.

These conditions may suit the human circadian rhythm - the daily cycle that affects the body's sleep, w...