You are told you have knee arthritis. The advice the doctor gives you is to go home, rest your knee, take anti-inflammatory drugs, lose some weight, wait until you are older and then get an artificial knee replacement. This advice is awful. Here's why.
Exercise for fun, or for training, or both. Exercise wisely, in ways that help you in sports or your daily life. But don’t do exercises that are useless, or potentially injury-generating. Here are a few doozies that should not be on your list: