Category: Circadian rhythms

Research published in *Brain* demonstrated that our body's internal clock is responsible for up to 80% of daily fluctuations in pain sensitivity. This discovery helps explain why healing wounds hurt more at night, as our circadian rhythm, hormones, and psychological state shift, amplifying discomfort when we need rest the most.

According to the ancient wisdom of Traditional Chinese Medicine (TCM), the body follows a precise 24-hour cycle of energy. This meridian clock, in which different organs reach peak activity at specific times, helps answer the question of what organ is active at 11pm.

According to research, many people report feeling their worst during the night, with symptoms seeming to ramp up just as they try to sleep. So, what time of day do you feel the most sick? For most, the answer is late evening and nighttime, a phenomenon tied directly to the body's internal biological clock, or circadian rhythm.

Body temperature naturally fluctuates throughout the day due to circadian rhythms, and this cycle is maintained even during an illness. In fact, studies analyzing thousands of emergency department visits have found that the incidence of fever is significantly higher in the evening than in the morning. Understanding **what time of day is the fever highest** is key to managing symptoms effectively and knowing what to expect during a recovery period.

Many chronic conditions have a hallmark of worsening symptoms during the night, a phenomenon linked to our body's internal clock. Understanding what disease gets worse at night is the first step toward finding relief and improving sleep quality.

The human body is not a thermostat set to a single, fixed temperature; it is a dynamic system with natural, predictable fluctuations throughout the day. Understanding **what is the normal daily temperature variation** is a key step toward recognizing your personal health baseline and identifying when an unusual temperature is a sign of illness.

Your body's internal clock, or circadian rhythm, orchestrates predictable fluctuations in energy and alertness throughout the day. Learning to work with this natural cycle is the most effective approach to determining what is the best time of day to use energy for maximum efficiency and well-being.

According to the American Academy of Sleep Medicine, a majority of adults feel tired and irritable after the time change. But beyond the initial grogginess, can the clock changing affect you on a deeper level, impacting your overall health and wellness?

Did you know that your core body temperature fluctuates in a predictable pattern every 24 hours? Controlled by your body's master internal clock, understanding **at what time does the temperature of the body rise and fall** provides vital insights into your overall health, sleep patterns, and energy levels.

According to a 2024 study published in the journal *Proceedings of the National Academies of Sciences*, people exposed to brighter nights and dimmer days have a significantly higher risk of premature death, highlighting just how crucial natural light cycles are. So, is getting dark good for your health? The science shows that embracing darkness is a vital component of optimal well-being.