For decades, we’ve been warned to “lift with your knees, not your back” — and most people still believe it. Even physical therapists believe it (in droves), despite plentiful evidence that it’s just not that simple. It might be going too far to say that it’s a “myth” that you shouldn’t lift with your back, but it’s definitely more nuanced than the traditional, one-size-fits-all demonization of stooping. A new study in the European Journal of Pain emphasizes the nuances, an...