A disruption of circadian rhythms
Researchers found that the condition of the cells in intervertebral disks directly depend on how stable your day and night cycle is.
Scientists suppose that when our circadian rhythms are disrupted (due to age, chronic insomnia, and night shifts), these cells start to function badly which leads to chronic inflammation and makes us more susceptible to the development of pain in the lower back and the degeneration of intervertebral disks.
Other studies showed that some natural anti-inflammatory chemical substances in our bodies are better produced during the day.
So, in order to slow down the aging of the spinal cord, you should stick to a schedule that doesn’t make you a zombie in the middle of the day.