Not to scare you, but... the chemicals from your clothes are absorbing into your skin.
Heat, movement, and friction against skin all do the same thing on a smaller scale, continuously, while the garment is being worn.
Sweating/moist skin provides a medium of which the chemicals can leach into the moisture and then reabsorb into our blood stream. People like to believe that our skin is a barrier, however our body is covered in pores that allow for chemical absorption.
Chemicals like parabens and phthalates are tied to infertility, cancer, obesity, learning disorders, and even health effects across generations. Parabens and phthalates, which are known hormone disruptors. We often link ‘hormones’ to women, forgetting that they directly affect men too, because your endocrine system is linked to every part of your body. There is evidence that endocrine disruptors (EDCs) affect both male and female hormones, such as fertility, breast development, cancer, prostate cancer, neuroendocrinology, thyroid, metabolism, obesity, and cardiovascular endocrinology.
PFAS (perfluoroalkyl substances) - chemicals which do not break down in nature - can permeate the skin barrier and reach the body’s bloodstream.
PFAS are used widely in industries and consumer products from waterproof clothing and school uniforms to personal care products because of their water and stain repellent properties.
Natural materials don’t shed microfibres into your bloodstream when you sweat in it. However, they can be treated with flame retardants, plasticisers, or disperse dyes that leach more readily under heat and moisture. Organic natural fibres are a great way to avoid this.
Don't throw away your wardrobe!
New everything can be expensive. Making smaller changes can make a big difference.Perhaps make swaps for everyday items first.
Underwear - swapping out your polyester underwear for organic cotton is a perfect place to start
Bedding - Swapping bedsheets to natural fibres such linen or cotton
Active wear - Swapping polyester, elastane, etc active wear for jersey cotton, bamboo, Marino wool etc.
Shopping consciously can help both your health and the environment.