Root Cause: Air-conditioning draft combined with synthetic or cotton fabrics creates rapid surface cooling around 3 AM. Sweat gets trapped in standard fibers, causing sudden body chills and interrupted sleep.

Your Action Plan:

a. Adjust fan or air-con direction away from direct body contact.

b. Switch away from moisture-retaining sleepwear.

c. Recommended Next Step: Transition your bed setup to high-density negative-ion layers that maintain balanced surface temperatures and manage moisture throughout the night. I'll walk you through the exact setup that matches your profile on WhatsApp.