Top News

Stepping into an air-conditioned metro after being out in 40°C heat feels like instant relief—but medically, it’s not always harmless. Experts say this sudden shift from extreme heat to a cold environment can put stress on your body if you’re not careful.

When you move quickly from a hot outdoor temperature (around 40°C) to a much cooler indoor setting (20–22°C), your body experiences what’s called a thermal shock. Your system struggles to adjust quickly, and that’s where problems can begin.

• Headache and dizziness: Sudden temperature change can affect blood circulation and trigger headaches.
• Muscle stiffness: Sweaty muscles exposed to cold air may tighten quickly.
• Cold and sore throat: Rapid cooling can irritate your respiratory system.
• Fatigue: Your body uses extra energy trying to regulate temperature.

People with asthma, allergies, migraines, or high blood pressure may feel these effects more strongly.

You might think stepping into AC cools you down safely, but there’s a catch. When sweat dries quickly in AC, your body loses fluids without you realizing it, increasing the risk of dehydration.

Doctors suggest avoiding a direct jump into cold environments right after being in intense heat. A few simple habits can make a big difference:

• Pause before entering AC: Stand in shade or a normal-temperature area for a couple of minutes.
• Let your body cool gradually: Allow sweat to dry naturally.
• Drink normal water first: Avoid ice-cold water immediately.
• Avoid entering AC when drenched in sweat: This increases the shock effect.