A. It is called rucking, a term from ruck marching, which is a skill that militaries around the world have long used for training.
B. Rucking involves walking with a weighted backpack. It’s an easy way to strengthen your heart and muscles without hurting the joints (关节).
C. Anyone who walked to school with a backpack full of books has already tried an exercise routine that is getting popular in the fitness world.
D. Even people eager for more exercise should progress slowly. Shoes that fit well can help you avoid additional foot pressure and safely walk on an uneven land.
E. As with any new physical activity, newcomers should start rucking with slow and stable steps. If you don’t have basic conditioning, try walking the expected distance with a very light pack first. Then slowly add more weight.
Long-distance running is a great sport for beginners. It has a lot of benefits. It will help you get fit and prevent diseases.
If you are new to running, here is some advice for you. It is important to warm up and cool down properly before and after running, so you do not hurt yourself.
| A．But you need to find someone to keep running with you. |
| B．It will also hurt you if you don't warm up before running. |
| C．A warm-up gets your blood flowing and prepares your body before you exercise. |
| D．It also strengthens your immune system and reduces the risk of serious health problems. |
3 . 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 |
