血行(けっこう)

Composed of 血(けつ) (blood) + 行(こう) (going, moving). Refers literally to the movement of blood through the circulatory system. Most often encountered in everyday health and wellness discussions rather than strict medical contexts.

Common collocations

• 血行(けっこう)が良(よ)い: to have good circulation
• 血行(けっこう)が悪(わる)い: to have poor circulation
• 血行(けっこう)を促進(そくしん)する: to promote blood circulation
• 血行(けっこう)を良(よ)くする: to improve circulation
• 血行(けっこう)不良(ふりょう): poor circulation (a fixed compound)
• 血行(けっこう)改善(かいぜん): improvement of circulation

Usage

• Massage, bathing, and stretching advice
• Explanations of why exercise is good for you
• Descriptions of cold hands and feet (冷(ひ)え性(しょう))
• Skincare and beauty writing (good circulation → healthy-looking skin)
• Home remedies for stiff shoulders and back pain

Similar words

• 血流(けつりゅう): blood flow — more technical and medical-sounding, often used to describe flow through a specific vessel or organ.
• 循環(じゅんかん): circulation — a general word for circulation of any kind; needs 血液(けつえき)循環(じゅんかん) to specifically mean blood circulation.
• 血液(けつえき)循環(じゅんかん): blood circulation — a fully technical term, used in medical writing.

Register is neutral: 血行(けっこう) is appropriate in everyday conversation, health magazines, product descriptions (bath salts, massage oils), and casual medical advice.