Q. Can you sweat while wearing polyester?

Don't let the fact that polyester is resistant to moisture and wear and tear deceive. As a matter of fact polyester may increase perspiration rather than absorbing it. Instead of preventing sweat from escaping the material just makes it sit on the skin or pushes it to the outer layer. Synthetic fibers are the best at resisting sweat and wicking away moisture. Chemical treatments are applied to many of them but these wash off after a few washes. However the sweat-proof or -wicking properties wear off after a few washes. Rather than wearing synthetics use sweat-wicking natural textiles.