Is your body designed for swimming? Or for going on a bike? I don't think so. These are modes of exercise we invented (even when we aren't optimally designed fo

Is your body designed for swimming? Or for going on a bike? I don't think so. These are modes of exercise we invented (even when we aren't optimally designed for them) and yet they are good for us. If you followed the "primitive people did it/did not do it" argument you'd have to say that going swimming must be bad for you.