Light's Dual Impact: Melatonin and Alertness
Light is known to influence melatonin, a hormone that signals to the body when it is time to sleep. However, the impact of light extends beyond melatonin regulation.
When the brain perceives light at night, it not only suppresses melatonin production but also activates the sympathetic nervous system.
This physiological system is responsible for maintaining alertness and preparing the body to respond to stress.