1 . You are also somebody who worries about getting sick. (1) It will give you good upper and lower body strength. Like any exercise, running increases the flow of blood and oxygen to your brain. (2) It also strengthens your immune system and reduces the risk of serious health problems, as well as more common illnesses like colds. (3) Even a thirty-minute run will provide relief from aches or tension that you may be suffering due to stress.

① Running will help you get fit and prevent discases.
② It is a great sport for beginners and has a lot of benefits.
③ It makes your heart stronger and allows more blood to flow around your body.
④ Besides, anybody who is feeling down can go for a run to cheer themselves up.
⑤ A warm-up gets your blood flowing and prepares your body before you exercise.
Please choose the best choice to fill in the blanks.

A．①③④

B．②③④

C．①⑤④

D．②④③