With the development of the technology ,there are plenty of ways of transportation all around the world, for instance: cars, bikes, flights and so on.They make our lives become more convenient and easier, however, i am interested in riding a bike. it is a great way to protect the environment and it can save petrol resources. in addition, it can not only overcome lots of the traffic problems. but also it is a good way to do excierse and keep healthy. i love riding bikes.
Air quality is getting worse now, and a major reason is that a large number of automobile exhaust emissions, cycling is no exhaust, you can do for us blue skies project contributions.
Cardiac function of bikes is to overcome the problems of one of the best tools. More than half the world's people are died of a heart attack, riding a bicycle can promote the legs blood circulation, it is easy to deposition of vascular peripheral blood pumping back to the heart, which at the same time enhance the micro-vascular tissue, which reinforced the "collateral circulation".
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