It's a legit question.
Think of having really terrible sunburn or an actual burn on your skin. Then picture someone taking a paper towel and wiping/rubbing it all down. It's so sore and raw from having needles repeatedly stuck into you. There is also green soap on the towel. Idk...I guess you'd have to experience it to understand. Some people, like Keith, love the feeling. I hate it and could do without.