<span>When a person smokes a cigarette, the body responds immediately to the chemical nicotine in the smoke. Nicotine causes a short-term increase in blood pressure, heart rate, and the flow of blood from the heart. It also causes the arteries to narrow. Carbon monoxide reduces the amount of oxygen the blood can carry. This, combined with the effects produced by nicotine, creates an imbalance in the demand for oxygen by the cells and the amount of oxygen the blood is able to supply.
So the answer is D. increased heart rate</span>
You worded your question weirdly...
There are many ways to become and stay healthy.
You need to balance your diet and follow the Food Pyramid or My Plate. You can also develop a workout plan and make it part of your everyday life. You need to make sure you get enough of you're daily required nutrients and vitamins :)
If you want a more detailed answer, make add me as a friend, I can definitely help you! I took 7 years of Cooking and Foods and nutrients
Meat such as bacon, and generally pork, can be a great source of B12 vitamin that helps you metabolize food, as well as Iron and Zync, which can help you in healing and recuperating.