When I was 35 and younger I could run no matter what i did to my body. Now that I'm in my 40's I find if I get knee pain, its almost certainly tight muscles ar

When I was 35 and younger I could run no matter what i did to my body. Now that I'm in my 40's I find if I get knee pain, its almost certainly tight muscles around the knee. That means I haven't' been stretching, drinking water, foam rolling or squatting and deadlifting enough. As you get older I find almost all ailments are a sign of not taking care of your body, not a sign of age related decay.