In humans the connection between light and biology is somewhat looser.
Does light make you happy.
And melatonin a hormone which promotes sleep.
We need cooler blue lighting in the morning to trigger our sympathetic nervous system which is associated with alertness and we need warmer light in the evening to trigger the parasympathetic nervous system which is associated with relaxation williams said.
People don t typically mate seasonally for instance although conception peaks in finland in the summer months when the sun shines for up to 20 hours a day so there s still a connection there source.
Happiness health and light the correlation of light and mood is dependent on the body s natural response mechanisms to produce serotonin a neurotransmitter which helps to elevate the mood.
Just like if it was a sunny day and you feel excited the effect is the same.
The ultraviolet uv light releases happy hormones in the body so that when you wake up and the ultraviolet rays of the light that shines in you you feel happy.