Simply put, your circadian rhythm is your body's internal clock. Operating on a roughly 24-hour cycle, it governs our sleep-wake cycle and plays a large part in everything from hormone release to body temperature.
According to the University of Pittsburgh School of Medicine's Daniel J. Buysse, PET scans of insomniacs and "normal sleepers" reveal marked differences. The "default mode network" in the former's brains are more active during sleep.
I am good. I am better than good. I am blessed beyond measure. And I know it. But lately, what I feel more than anything is tired. Not physically tired, though there's always that. No, I mean tired in the full, all-encompassing sense of the word.
Depending on how bad things have gotten, you may need a mini leave of absence to restore yourself. Recognize that you are capable of revitalizing and returning to your normal energetic self. But you do it by taking your foot off the gas, not pushing harder.
The next time you're feeling tired, question yourself, ask your body what it wants to say. The smallest new thought could reveal deeply hidden truths. Rather than dismiss these new ideas, include them.