I have recently started Hiit classes. I was taking ibruprofen afterwards to stop the aches but have since learned that it won't help and will hinder my progress. So I have started to use deep heat on the occasional twinge. I did a particularly hard session today and my knees are a bit achey and my lower back is a bit twingy. I have applied deep heat a minute ago, I love the smell but why does it feel cold and not hot? And will it help? 🤔