TCM Meridian Clock | Staying Healthy with the Time
Introduction
The TCM Meridian Clock is an interesting concept in Traditional Chinese Medicine. TCM traditionally views the body as an interconnected system by how the chi, or energy, flows through it. They base this on the 5 elements as well as connecting it to a 24-hour clock that links to specific organs/meridians. This 24-hour clock, usually separated into 2-hour time periods, ties to specific organs and meridians. This view is based on traditional practices.
What Is the TCM Meridian Clock?
The 24-hour clock is divided into 2-hour periods, and each period traditionally corresponds with a particular organ/meridian. Qi, according to TCM, is believed to be the strongest during that 2-hour period for the organ/meridian it corresponds to. The opposite organ on the clock is always 12 hours away (look at the chart below). Many practitioners may look at recurring symptoms, sleep patterns, digestion, energy, and emotions alongside the clock as part of a broader TCM assessment.
The 12 Times of the TCM Meridian Clock
Below is a table showing the 24-hour TCM Meridian Clock, which shows the opposite organ/meridian for each time period.
| Time | TCM Organ/Meridian | Traditional Association |
|---|---|---|
| 3–5 AM | Lung | Breathing, grief, beginning the day |
| 5–7 AM | Large Intestine | Elimination |
| 7–9 AM | Stomach | Digestion and nourishment |
| 9–11 AM | Spleen | Digestion, nutrient transformation, energy |
| 11 AM–1 PM | Heart | Circulation, connection, joy |
| 1–3 PM | Small Intestine | Sorting and absorption |
| 3–5 PM | Bladder | Fluid balance and elimination |
| 5–7 PM | Kidney | Energy reserves and vitality |
| 7–9 PM | Pericardium | Circulation, relationships, relaxation |
| 9–11 PM | Triple Burner/San Jiao | Regulation and preparation for sleep |
| 11 PM–1 AM | Gallbladder | Decision-making; traditional digestive functions |
| 1–3 AM | Liver | Blood, Qi flow and traditional detoxification functions |
Waking Up at the Same Time Every Night
Many of us wake up during the night when we are sleeping. Have you ever noticed it’s roughly at the same time? According to TCM, repeatedly waking during a particular two-hour window may guide a practitioner to begin looking more closely at the corresponding meridian and its traditional associations.
Waking at the same time every night doesn’t automatically mean something is wrong with that corresponding organ or meridian. It may simply be one pattern to consider along with other factors. We all know that sleep is affected by stress, pain, hormones, medications, blood sugar, alcohol, sleep apnea, your environment, and many other factors.
Emotions and the Meridian Clock
In TCM, organs and meridians are also associated with emotions. So in TCM, waking up at 3-5 am corresponds to the Lung organ/meridian as well as the emotion of grief. This gives the practitioner more information and thought on what to ask and look for.
Below is a brief example:
- Lung → grief
- Liver → anger/frustration
- Kidney → fear
- Heart → joy
- Spleen → worry/overthinking
Remember, this is not based in science; it is based in the practice of Traditional Chinese Medicine over thousands of years.
Working With Your Natural Daily Rhythm
Paying attention to the TCM Meridian Clock may offer some helpful insight into what is going on with your own health concerns. It is one traditional way of helping you to observe patterns about yourself.
Our overall health isn’t usually determined by a single factor and is often affected by our daily lifestyle habits. Below are a few lifestyle habits you may also want to pay attention to. They may give you another perspective.
- Eating regularly
- Getting up in the morning and getting some sunshine or daylight
- Make sure you are getting movement during the day
- Setting time in your schedule to wind down at night
- Creating a sleep routine so you get adequate sleep
- Supporting digestion and gut health
- Managing stress
- Paying attention to patterns in your body with and without the TCM Meridian Clock
TCM Meridian Clock and Modern Circadian Rhythms
Modern science also recognizes that our bodies operate according to a 24-hour rhythm, a circadian rhythm. Our bodies run on a master clock with the brain as the conductor. Daylight lets the conductor know it is daylight, and darkness signals the conductor that it’s time to wind down, begin releasing melatonin to promote sleep. We also have clock genes that regulate our protein levels, and each organ contains its own local clock. This allows for hormones, temperature, and metabolism to be regulated. It also explains why shift work, jet lag, or late-night screen time can impair your health. Our bodies were designed to function on a rhythm. The modern understanding of circadian rhythms is different from the TCM Meridian Clock, but both recognize that timing and daily rhythms can be important to how our bodies function.
Listening to Your Body
Whether you do or do not follow the TCM Meridian Clock, there is a lot of value in paying attention to the patterns your body tells you. Questions to ask include:
- When do I have the most energy?
- When do I feel the most tired?
- Am I waking up at the same time every night?
- Does my digestion change during the day?
Our body gives us information all the time. Learning to recognize this information and paying attention to it will help you see patterns that may be helpful in making healthier choices.
This article was originally published as part of the Sunshine Sharing newsletter series.
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