I don't know if nurses all have to be powerlifters, but I do think that some kind of strength training, is very helpful. Even with "no lift" policies, you still need a lot of strength to do nursing. Pushing a 350 pound patient in a 1000 lb bed down a hallway, turning patients, lifting them up in bed when they slide down, pushing and pulling them in and out of CT machines, holding up a heavy leg when someone is doing a dressing change, the list goes on and on. If you are not in shape, you will end up at the very least, very sore, or worse, with back injuries. Even in my 60's I stay in shape and work out, and half the time I run circles around some of the younger nurses who are always complaining about back pain, being exhausted, etc.