For many Americans, a heat wave means iced drinks and frozen treats.
— AJ+ (@ajplus) August 9, 2026
But across parts of Africa, Asia and Latin America, people still sip hot tea, eat steaming soup and load their food with chiles.
It may sound counterintuitive – but there’s science behind it. pic.twitter.com/JeF9s2subV
Ever wonder why folks in scorching climates reach for chili peppers and hot broth? 🌶️ Here’s the science-backed reasoning behind this refreshing paradox:
Sweat-activated cooling 💦 – Capsaicin, the fiery compound in chilis, flips on your TRPV1 heat sensors, prompting your body to produce sweat. As that moisture evaporates from your skin, it whisks internal heat away. (This trick works like a charm in dry, arid conditions where evaporation happens easily! 🌬️)
The hot drink surprise ☕🔥 – Downing a hot beverage adds a slight burst of warmth, but it ramps up your sweating rate significantly. If that extra perspiration evaporates fully, your total body heat can actually drop lower than if you'd sipped something cold—provided the humidity stays low.
Electrolyte boost 🍲 – Warming broths (think pho) don’t just rehydrate you; they replenish crucial electrolytes and minerals, keeping your system primed to sweat productively without tanking your hydration levels.
This clever physiological mechanism explains why spicy, steaming meals are staples across Africa, Asia, and Latin America. 🌍 The golden rule? It all hinges on evaporation—so without decent airflow and low humidity, that cooling magic just won’t kick in!
