Physical fitness Quote

I think this quote means that physical fitness is what not makes you strong that your feelings and your act of kindness make you that way. People that are smart always make good decisions that can help them in life. Making good decisions make you achieve because because you are giving yourself an honor to have a good reputation. Usually people that makes bad decisions end up loosing people's trust and they are giving themselves a bad name. True feelings make you strong because for example if your friends invite you to smoke or drink and you say no then you are showing them that you are strong enough to stand up for yourself and choose what's good. If you are healthy and always taking care of yourself then you are making a good decision to prevent from getting a disease or something. People are strong because of the intelligence they have or there kindness to care for others and leading them to a good path.