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Why do the edges of my underwear near my legs and groin turn yellow after exercise?

Posted by Salvador

On and off for  some time now, I've noticed that the edges of my underwear on my legs where the underwear sits between the leg and the groin often turn yellow after friction from walking for exercise. I'm guessing it is riboflavin coming through my skin at the point of friction. I'm a bit overweight so my underwear is not lose there. Since I wear white underwear it is easily noticeable. What exactly might this yellow be coming from?
Answers (2)
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Lol ! Kindly change the topic !


I think you should change your underware.Try some yellow color underware instead of white underware.

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