Underwear is worn for a variety of reasons. They keep outer garments from being soiled by perspiration, urine, semen, pre-seminal fluid, feces, vaginal discharge, and menstrual blood. Women's brassieres provide support for the breasts, and men's briefs serve the same function for the male genitalia.

What happens if we don't wear inners?

This may take the form of bumps, rashes, blisters, or irritation. More serious reactions can cause tissue damage and infections. Without underwear, you've got one less piece of clothing to worry about causing a reaction.

Is it good to wear inners at night?

“Wearing underwear in bed can be fine if it allows free air flow, and does not cause pain or excessive heat and moisture. Warm and moist areas can encourage growth of infections such as thrush. Tight underwear can also lead to vaginitis, which is inflammation and soreness of the vagina, including bacterial vaginosis.