Dahan (Great Cold) is the final solar term in the traditional Chinese 24 Solar Terms, usually occurring around January 20th. It marks the coldest period of the year, when yang energy is deeply stored and yin coldness reaches its peak. During this time, the body’s circulation of qi and blood slows down significantly, particularly affecting joints such as the knees. According to Traditional Chinese Medicine (TCM), “cold causes contraction”—exposure to cold pathogens can lead to stagnation in the meridians and impaired qi and blood flow, resulting in or worsening knee pain, stiffness, and limited mobility.Therefore, during Dahan, it’s essential to focus on “warming and unblocking” to “thaw” the knee joints. “Warming” involves dispelling internal cold through diet, lifestyle adjustments, and moxibustion, while “unblocking” aims to promote circulation and open the meridians. One should consume warming foods like lamb, ginger, and longan, and avoid raw or cold items. Keeping the knees warm—using knee braces or applying heat—is crucial. Gentle exercises such as Tai Chi or Baduanjin can also enhance qi and blood flow. Additionally, moxibustion on acupoints like Zusanli (ST36), Yanglingquan (GB34), and Xiyan (EX-LE5) helps warm the channels, dispel cold, and invigorate blood circulation.Although Dahan is the coldest time, it also signals the subtle return of yang energy. By aligning with nature’s rhythm and nurturing the body appropriately, one can not only alleviate knee discomfort but also lay a strong foundation for health in the coming spring.
大寒是二十四节气中的最后一个节气，通常出现在每年1月20日前后，标志着一年中最寒冷的时期。此时阳气潜藏，阴寒极盛，人体气血运行缓慢，尤其对膝关节等关节部位影响显著。中医认为“寒主收引”，寒邪侵袭易导致经络凝滞、气血不通，从而引发或加重膝关节疼痛、僵硬、活动受限等问题。因此，在大寒时节，应注重“温通”以“解冻”膝关节。所谓“温”，即通过饮食、起居、艾灸等方式驱散体内寒气；“通”则指促进气血运行，疏通经络。日常可多食用温性食物如羊肉、生姜、桂圆等，避免生冷；注意膝部保暖，可佩戴护膝或热敷；适当进行温和运动如太极拳、八段锦，以助气血流通。此外，艾灸足三里、阳陵泉、膝眼等穴位，也有助于温经散寒、活血通络。大寒虽寒，但亦是阳气萌动之始。顺应天时，调养得当，不仅可缓解膝关节不适，更能为来年春季的健康打下坚实基础。
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