Why ladies shouldn't go to sleep with underwear -Health Experts

According to health experts, what we wear  to bed is impacting our health 'down there' and regardless of what the weather is doing outside, you should not be wearing underwear in bed.
Nancy Herta, M.D., an ob-gyn at Michigan State University told Glamour , if you're prone to vaginal issues, you should reconsider.

"Between discharge and sweat, things tend to get moist down there, and underwear can trap that moisture, creating a breeding ground for bad bacteria.Allowing that area to get some air helps to keep it dry and clean" also telling the site how the vagina takes better care of itself with some "breathing room".

So, instead of tightly-fitted knickers, cotton pyjamas would work better - and make sure they're loose-fitting too.
And if the idea of going naked  doesn't agree with you Dr Herta suggests

"loose-fitting cotton underwear, which can help absorb some of the moisture instead of keeping it right against you, like silk or lace does."