> Why an exercise as high-impact on the joints and as potentially injurious as this hasn't been stopped has to be purely because people enjoy it so much, or the

> Why an exercise as high-impact on the joints and as potentially injurious as this hasn't been stopped has to be purely because people enjoy it so much, or they don't see an alternative. I'm not surprised that injuries are common. My wife recently started on a running course that is being promoted by the NHS in the UK, Couch to 5K. It involves running at increasing duration interleaved with walking and is targeted at people who have not run before. Within three weeks she had to drop-out because she had injured her knee. Despite being 'coached' by a noted local runner, the course offered no advice on running technique. It involved being told to 'run'. Imagine starting a Learn to Swim course and being told to just get in the pool and swim...