Reading up on red light therapy - its not just about vitamin D deficiency from too little UV light (sunlight), but your circadian rhythm can get disrupted from too little blue light in the morning (and too much artificial light at night).

1. Blue light—influences the brain's circadian rhythm which regulates neurotransmitters and hormones

2. UV light—helps us make vitamin D from sunlight

3. Far-infrared—part of the sun's spectrum, can heat up cells and stimulate changes in cell function and circulation. This is why you feel heat from the sun.

4. Red light—stimulate the mitochondria in our cells, which increases cellular energy production, particularly ATP.

Note :

- ATP (adenosine triphosphate) also known as "energy currency" or the energy money of the cells. It stores and provides energy for the cells to do what it needs to do. More energy currency means more cells are powered.

- Mitochondria generates ATP

5. Near-infrared (NIR)—similar to red light in triggering mitochondria to generate ATPs

I'm going through the ultimate guide of red light therapy by Ari Whitten but i'll probably catch up on Huberman's podcast on it first to have a clearer understanding. If anyone has any info on this, would love to know more