X.​Read the passage, and then choose the best answer. ​Along with jogging and swimming, cycling is the best all-round forms of exercise. It canhelp to increase your strength and energy, giving you a stronger heart. You don’t carry the weight of your body on your feet when cycling. It is also a good form for people with a pain in your feet or your back. You should start your hobby slowly. Doing too quickly can have bad effects. ​You should cycle twice or three times a week. If you find you are in pain, you will stop and take a rest. 1.​Why is cycling a good form of exercise? ​ 2.Why might people with a pain in the back go cycling? ​ 3.What will happen if you do too quickly? ​ 4.How often should you go cycling? ​ 5.What will you do if you find you are in pain ​