Knowing that he wants to go to bed early, he can't help but stay up late to watch TV dramas; he knows that smoking and drinking are harmful to his health, but he can't resist the temptation to smoke and drink; he knows that exercise is good, but he doesn't bother to walk a step. In life, many people are not lack of health knowledge, they are more lack of self-discipline. People with self-discipline will go to bed early, avoid certain foods and keep exercising. If a person adheres to the spirit of self-discipline, he will not indulge himself, he will be able to maintain his circadian rhythm and live a healthy and happy life.
According to the above statement, which of the following options can be obtained?
Some people who lack self-discipline do not lack health knowledge