Some people might put this question: How useful is walking for your health？Now, the answer

Some people might put this question: How useful is walking for your health？

Now, the answer comes as follows:

Walking is the one of the easiest way to exercise. You can do it almost anywhere and at any time. Walking is also inexpensive. All you need is a pair of comfortable shoes. Walking will give you more energy, make you feel good, help you to relax, reduce stress, help you sleep better, tone your muscles, decrease the risk of death, heart attacks, stroke, some cancers, depression, anxiety and obesity. It improves overall health and lightens your mood. It also helps control your appetite, and increase the number of calories(卡路里) your body uses. For all these masons, people have started walking programs.

Doctors recommend thirty minutes of physical activities (walking or other physical activities) on most days. A fast 30-minute uses 100 calories. You can easily add 30 minutes of exercise daily by making a few minor changes, such as parking farther from work or from a store, then walking the extra distance.

Which is not mentioned as one of the advantages of walking in this passage？

A．It can help you lose weight.

B．It gives you more energy.

C．It's cheap.

D．It helps to increase your appetite.