Daily Health Complaints: It's extremely common for people to self-diagnose with 湿热. If someone feels tired, has a sticky or coated tongue, breaks out in pimples, or feels irritable in the summer, they'll often say, “我最近有点湿热 (Wǒ zuìjìn yǒudiǎn shīrè)” - “I've been a bit damp-heat lately.”
Dietary Choices: This is the most practical application. People will actively avoid “damp-heat” causing foods when they feel this way. These include deep-fried foods, spicy dishes (especially Sichuan hot pot), fatty meats, sugar, and alcohol. Instead, they will seek out foods and drinks known to “clear damp-heat” (清湿热, qīng shīrè), most famously the bitter herbal teas known as 凉茶 (liángchá), which are sold on street corners all over Southern China.
Regional Prevalence: The concept is much more prevalent in the hot, humid regions of Southern China (like Guangdong, Guangxi, and Hong Kong) than in the dry, cold north. For southerners, managing 湿热 is a part of daily life, deeply influencing local cuisine and lifestyle.