To accommodate daily recurring environmental changes, animals show cyclic variations in
behaviour and physiology, which include prominent behavioural states such as sleep–wake …

Circadian clocks are endogenous oscillators that control 24-hour physiological and
behavioural processes in organisms. These cell-autonomous clocks are composed of a …

Photobiomodulation (PBM) involves the use of red or near‐infrared light at low power
densities to produce a beneficial effect on cells or tissues. PBM therapy is used to reduce …

The circadian rhythm is an evolutionarily conserved time-keeping system that comprises a
wide variety of processes including sleep–wake cycles, eating–fasting cycles, and activity …

Patterns of daily human activity are controlled by an intrinsic circadian clock that promotes∼
24 hr rhythms in many behavioral and physiological processes. This system is altered in …

The mammalian circadian clock consists of a transcription–translation feedback loop (TTFL)
composed of CLOCK–BMAL1 transcriptional activators and CRY–PER transcriptional …

The mammalian circadian clock is built on a feedback loop in which PER and CRY proteins
repress their own transcription. We found that in mouse liver nuclei all three PERs, both …

The mammalian circadian clock relies on the transcription factor CLOCK: BMAL1 to
coordinate the rhythmic expression of 15% of the transcriptome and control the daily …

Circadian timekeeping allows appropriate temporal regulation of an organism's internal
metabolism to anticipate and respond to recurrent daily changes in the environment …

Summary In our 24/7 well-lit world, it's easy to skip or delay sleep to work, study, and play.
However, our circadian rhythms are not easily fooled; the consequences of jet lag and shift …