Hello Nl fashionistas, a colleague of mine asked me to today the reasons why we put on socks and underwears, is it for fashion, health or other reasons, seriously i dont know, so does anyone know why we put on socks and underwear (singlet )

Sometimes i have weird tots, just few days back...AM LIKE why do women wear bra...again i asked myself who invented bra, who was the first woman to wear bra. Pants nko...i also asked myself, at what point did man start cooking food. when fire was not discvorered, they never cooked anything but lived longer...origin of cooking..I couldnt find answers...never asked google though...