"The End of Heat" is the second small season of autumn and marks the turning point of the year's temperatures. This is when the sun reaches a celestial longitude of 150°. It is also the main harvest season—not only for farmers. If you have been taking good care of yourself over the past half year, this can be your season to "harvest" as well.
Although it is called the "End of Heat," on bright sunny days the daytime temperature can still be as high as it is in summer. In China, this period is also known as the "Autumn Tiger," because the lingering heat can still "bite" like a tiger. However, during the late night and early morning, we can truly feel the end of the summer heat. The difference between daytime and nighttime temperatures becomes greater and greater.
Just as farmers hope this season will not be too rainy, our bodies also benefit from drier weather. As the summer heat gradually leaves, humidity often remains. Therefore, we should help the body eliminate excessive Dampness so that it does not trouble us during the coming winter. This may sound contradictory, but this is also the season of Dryness, meaning that we may experience health problems caused by insufficient body moisture.
How does that make sense? One simple example I often use is this question: "Can a sailor die of thirst in the middle of the ocean?" The answer is yes. Although the sailor is surrounded by water (salt water), he or she can still die from a lack of drinkable fresh water. The "water" we are referring to is different in each case. Likewise, the body can suffer from both excess Dampness and internal Dryness at the same time.
So, the main characteristics of this small autumn season are:
Greater temperature differences and unstable weather.
Excess Dampness remaining from the previous season, together with the harmful Dryness of the new season.
We have already discussed that autumn corresponds to the Lungs in Traditional Chinese Medicine. Healthy Lung Qi (together with the Large Intestine) forms one of the foundations of a healthy body. Therefore, the basic principle during this season is still to protect and nourish Lung Qi. Here are some simple things we can do to achieve that goal:
Do not add too many layers of clothing too quickly. The goal is to allow your body to adapt to slightly cooler temperatures without becoming cold. (Of course, this does not mean catching a cold.) This gradual adjustment prepares your body for the colder months ahead while also helping to preserve and withdraw Yang Qi. If the body becomes too warm, excess heat (Yang Qi) will naturally disperse outward. Whenever heat leaves the body, cold has an opportunity to enter. However, as mentioned earlier, during the late night, early morning, or whenever the temperature drops significantly, do add extra clothing to protect yourself. As always, maintain balance.
Protect your abdomen. Keep your abdomen well covered while sleeping, even if the night feels warm. Cold can easily injure the Stomach and Spleen Qi if they are left exposed. Many people have experienced the discomfort caused by a cold stomach. It is common knowledge in many cultures, but it is always worth the reminder.
It is time to turn off the air conditioner, especially in your bedroom. Do not let using the air conditioner become a habit. Turning it off at night is especially important. During the daytime, whenever possible, open the windows instead. You will not only enjoy naturally cool air but also allow the fresh autumn Qi to circulate through your home, helping remove the remaining Dampness and residual summer heat indoors.
As you can see, everything we are trying to do is to help the body remain in balance. In modern terms, we often recognize this as maintaining a strong immune system. Another essential factor that can never be replaced is good sleep. During this transitional season, sleeping around midnight and taking a short nap around midday, if possible, become especially beneficial because both noon and midnight represent important Yin-Yang transition points within the daily cycle. Some people may not be able to fall asleep before midnight. If that is the case, I recommend at least going to bed and resting quietly with your eyes closed. Even if you are not asleep, you are still allowing your body to conserve rather than consume its precious transitional Qi.
I have previously listed many foods that are suitable for autumn, so please refer to my earlier posts for more details. Here I would simply like to repeat the general principle: eat less spicy and warming foods, and choose more sour and moistening foods.
During this small seasonal period, many Chinese people—especially those originally from Beijing, like myself—have the tradition of eating duck on the "End of Heat" day (August 23 this year). I know duck is not a common food for everyone, but because it is highly nourishing, I still recommend it. This is an excellent season to enjoy duck because it nourishes Yin well, and autumn and winter are the seasons for nourishing Yin. (By contrast, spring and summer are the seasons for nourishing Yang.)
Strong Yin provides what the body needs to balance seasonal Dryness. It not only moistens the body and supports the smooth flow of Qi, but also helps calm the mind. When your entire system is balanced and resilient against harmful seasonal influences, feelings such as frustration and sadness are less likely to arise. If you do not enjoy duck meat, duck soup is a good alternative, if it is available.
So, during this dry and changeable small autumn season, maintain a calm and stable state of mind. Enjoy the peaceful moments as the lively summer season comes to an end. It is now time to draw your Qi inward and take good care of it, so that you will have even more energy to enjoy life again next year.