Went for shower after run yesterday and all as usual Water trickled over head - lovely , over shoulders - nice , down my back - bliss, then ouch ouch what the ..... Felt like hundreds of needle attacking me Look away now if easily offended / squeemish After googling appears I have chaffing in area between my bottom cheeks Used some sudacreme we had for small grandchildren but really ' nappy rash' at my age! It's seems fine today Anyway what I'm hoping someone out there has advice on how to prevent it again. I was aware over weekend that pants were miss behaving and going places they shouldn't ( think they too big after my weight loss) Also had longest run yet on mon and it was hot so guess sweat and fabric rubbing the cause . Someone mentioned Body glide But is it suitable for this and do I now have to put it on before every run ? Any suggestions for type of pants ? My goodness this must be my strangest post ever but I know I can ask you anything