Life is based upon the entangled activity of photobiochemical and photobiophysical processes. Conventional medicine and physiology often tend to ignore the biophysical part of organic existence despite the fact that biochemical reactions without regulative and controlling information would end up in metabolical chaos. Biological processes notably seem to be able to suspend the laws of thermodynamics to some extent. Electromagnetic radiation or light in the living organism propagates on biochemical pathways thereby controlling and steering the reaction chains and their outcome. Thermal management in mammals is anything but trivial since infrared radiation is not only the product of quantum energy degradation from photochemical processes down to heat but also the keeper of biochemical reproducibility and constancy of reaction kinetics. The presentation explores the realm of biophotonics, addressing a number of fundamental mechanisms and hypotheses related to life, light and health.