Justin,
I’m worried about your health, have you considered cutting the tobacco out of your life. There are so many chemicals in cigarettes that it dulls your taste buds. Don’t you want to quit just so you could taste better. Also smoking can lead to erectile disfunction so if you plan on getting married I’d try getting some nicotine gum. Short acting nicotine replacement therapies can help you overcome intense cravings. Give your mouth something to do to fight a tobacco craving. If that doesn’t work then you can try going for a jog short burst of physical activity can make a tobacco craving go away. Get out once in awhile Justin! Smoking may have been your way to deal with stress. Resisting a tobacco craving can itself be stressful. Another thing you can try is to just take the edge off stress by practicing relaxation techniques, such as deep-breathing exercises, muscle relaxation, yoga, visualization, massage or listening to calming music. Or even Join an online stop-smoking program. Or read a quitter's blog and post encouraging thoughts for someone else who might be struggling with tobacco cravings. Learn from how others have handled their tobacco cravings.
Your environment can affect your fitness on many levels. Such as transportation. The more auto transportation opportunities you have, the less likely you are to either walk, bike, run, and so on. The atmosphere of your environment plays a huge role too. Is your city/town busy or slow going? The temperature. If it is sunny out, people can tend to want to be outdoors more than if it were raining or cold. There are plenty of factors, but sometimes it just varies on the people and their motivations.
I think it is D. Ask the doctor what the writing says. If that's wrong, then it's C.
Definetly A. They work on the ability to supply oxygen to the lungs from the heart, to help them run.