Wearing polyester underwear while exercising leads to absorption of endocrine-disrupting chemicals that lower testosterone.

“there have been multiple studies and what they see is actually lower sperm counts and lower hormone levels when you put polyester underwear on junk”

“if you're exercising if you're working out if you're sweating in anything that's hugging your junk that's made from polyester you are absorbing chemicals that are endocrine disrupting that are lowering your testosterone from your underwear”