life hack for breathable long underwear

In these winter months long underwear can be a huge help, especially when spending time outside. The old long underwear were warm and breathable cotton but bulky. The new type is warmer, lighter and thinner but 100% synthetic fabric which means it doesn't breath. This can lead to discomfort as moisture builds up especially if you are exerting yourself and sweating. SO! Here is a hack for that. Simply take an old shirt or whatever made from stretchy cotton and cut out some circles. Cut out some slightly smaller holes in the armpits and crotch of your long underwear. Using a zig zag stitch on your machine or by hand sew the circles of stretchy cotton in. You will find the long underwear much more comfortable yet equally warm. Doesn't do a thing for the lack of sexiness factor but much more practical :)