That's true, but I would argue that your body will give clear signals if you're doing something you shouldn't be. Things like sprains, sudden joint pain, and li

That's true, but I would argue that your body will give clear signals if you're doing something you shouldn't be. Things like sprains, sudden joint pain, and light-headedness have a very clear purpose: to stop you from continuing. Perhaps I should add "and listen to your body" to my previous comment.