Swiss researchers found that people fell asleep quickest when their hands and feet were warmest. This happens because warm feet and hands cause blood vessels to enlarge, allowing more heat to escape your body, which in turn lowers your core temperature faster and causes you to fall asleep. Putting on socks may help you fall asleep in half the time it normally takes.
Bras, with their straps and hooks and especially underwires, dig into the skin and interfere with the flow of lymph through your lymphatic system. The result can be health problems that, apart from irritations, welts, indentations and cysts, include an increased risk of breast cancer. One 1991 Harvard study found that wearing a bra 24/7 increased the incidence of breast cancer by 100%.