Hi! Not sure if this should be in the sports section or not but can anybody advise what underwear is comfy under leggings for spin class please? I had my usual comfy undies on but they've started riding up and the leg elastic part has started chaffing/cutting into the skin all around. This never happened before but I have put on weight so maybe related. I fear a thing would disappear never to be seen again but surely there must be suitable underwear that I haven't thought of?