If you wear lots of polyester or any other man made fibre–with the possible exception of rayon–you are inviting excess sweat!  It’s true.   These fabrics don’t breath, therefore they block any kind of circulation next to the skin.  Your body heats up, and your  perspiration increases.

So do your self a favour and build a little air conditioning into your clothes.  Where lots of natural fibres like cotton and silk.   You’ll find you sweat a lot less!