This particularly includes the children and the spouse of the smoker. Avoid tobacco and do all you can to help others overcome this harmful habit. All psychoactive chemicals which directly affect the brain should be avoided under normal circumstances. These include alcohol and caffeine -containing drinks. The brain is too delicate a mechanism to purposely interfere with.
Balance is important.
As one considers a healthful lifestyle, it is important to recognize the importance of balance in the body. An adequate blood glucose level is vital, and the body works hard to ensure it does not go too high or too low. Too much of a good thing can be harmful. For example, some exercise is vital, but too much can injure the immune system, making one more prone to infections. It is important to void the tendency to become radical or fanatical about any health practice.