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Harnessing the Power of San Fu Days

Updated: Jul 25

Lifestyle · June 2025


San Fu Days (三伏天), known as the Dog Days of Summer, represent the hottest, most Yang time of the year according to the Traditional Chinese Medicine (TCM) calendar. This annual three-part period—Initial Fu (初伏), Middle Fu (中伏), and Final Fu (末伏)—marks a powerful seasonal shift when Yang energy reaches its peak, opening a rare window for deep healing.


By strategically applying moxibustion and lifestyle alignment during San Fu Days, you can release deeply rooted Cold and Damp pathogens, strengthen your Lung and Spleen Qi, and protect your body ahead of the fall and winter seasons.


Image of Summer Heat in Field

What Are San Fu Days in TCM?In Traditional Chinese Medicine (TCM), illness often arises when external pathogens like Cold and Dampness invade the body and become trapped. These latent factors may remain dormant for months—or even years—until they are activated by seasonal transitions or a weakened immune system.


This can lead to chronic health issues, such as:

  • Chronic asthma or bronchitis

  • Allergic rhinitis (seasonal or year-round)

  • Frequent colds or respiratory infections

  • Joint pain and arthritis that worsen in cold or damp weather

  • Sluggish digestion or poor appetite

  • Low immunity in children or the elderly


Why This Time is Significant in TCMSan Fu Days (三伏天)—the hottest and most Yang time of the year—offer a rare therapeutic window to dispel Cold, warm the meridians, and support the body’s long-term vitality. According to TCM, Yang energy reaches its annual peak during this time, making the body more receptive to warming, strengthening, and preventative treatments.

The intense Yang energy of San Fu Days allows practitioners to:

  • Expel Cold and Damp that would otherwise linger

  • Strengthen Lung Qi, which governs respiration and immunity

  • Tonify the Spleen and Kidneys, the body's roots of digestion and energy production

  • Prevent winter illnesses like asthma, bronchitis, arthritis flares, and sinus congestion


Image of beach

Moxibustion During San Fu Days: Warming the Body from WithinMoxibustion (艾灸, ai jiu) is a time-honored therapy in Traditional Chinese Medicine that involves burning dried mugwort (moxa) near specific acupoints to warm the meridians, dispel Cold and Damp, and nourish Yang energy. San Fu moxibustion involves applying moxa (a dried herb) to specific acupuncture points during the San Fu days, which are the hottest days of summer.


​During San Fu Days, the intense external heat harmonizes with moxibustion’s internal warmth, creating a synergistic effect that makes this treatment especially potent.


Why Moxibustion Is So Effective During San Fu:

  • The body’s pores are more open and receptive due to summer heat

  • The rising Yang Qi helps moxa’s warming properties penetrate deeper into the tissues

  • Cold and Damp pathogens surface more easily, making it an ideal time to expel them

  • Regular treatments during San Fu can reduce chronic conditions that worsen in fall and winter


Common Conditions Treated with San Fu Moxibustion:

  • Chronic asthma and bronchitis

  • Digestive sluggishness and abdominal bloating

  • Cold hands and feet

  • Menstrual cramps due to Cold in the uterus

  • Low immunity and fatigue


​Moxibustion may be used alone or in combination with acupoint herbal patches during San Fu treatments, depending on individual needs.


Image of person receiving moxibustion session

How to Prepare for San Fu Days

Preparation is essential to make the most of San Fu Days. Here's how you can get ready:


1. Schedule an Initial Evaluation

A brief consultation helps determine your body's pattern (e.g., Lung Qi Deficiency, Spleen

Yang Deficiency, Wind-Cold retention) and tailors your treatments accordingly.


2. Adjust Your Diet

  • Favor light, warm, and easy-to-digest foods like congee, steamed vegetables, and bone broth.

  • Avoid cold drinks, raw food, and excessive sugar—these weaken the digestive system and dampen Yang energy.

  • Add warming herbs like ginger, cinnamon, and garlic to your meals.


3. Regulate Your Routine

  • Wake up early and take advantage of morning sunlight.

  • Practice gentle movement, such as Tai Chi or walking meditation, to align your Qi flow.

  • Hydrate, but avoid iced water—opt for room-temperature or warm herbal teas like mulberry leaf or perilla leaf tea.


Image of whole foods

Pro Tips to Maximize San Fu Benefits at Home

  1. Daily Ginger Foot Soak: Encourages circulation and pulls Cold from the lower body. Use 2 slices of fresh ginger in hot water for 20 minutes before bed.

  2. Eat Congee for Breakfast: Try a warming rice porridge with scallions, sesame oil, and goji berries to support digestion.

  3. Practice Breath Work: Open your Lung meridian with deep, slow breathing exercises in the morning sunlight. Try alternate nostril breathing or Qigong.

  4. Avoid Overexertion: Even though it’s summer, Yang energy can be drained with excessive activity. Keep your nervous system calm and nourished.


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The information presented in this blog post is for educational purposes only and is not intended to diagnose, treat, or cure any medical condition. It is recommended that you seek the advice of a licensed healthcare professional before beginning any proposed treatment or making any changes to your healthcare regimen.


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