初二英语课外阅读文章 初二英语课外阅读文章篇(一) How to keep fit Running Running will help you lose weight faster than any other activity
It also strengthens (加强) your heart, lungs, and leg muscles (肌肉)
But it can hurt your joints (关节)
If you feel ache in your knees, you need to stop and choose a different activity
Walking Walking puts less stress on the body than running
But you need to get your heart beating faster to see results
This means youll need to walk fast
Walking can also help you lose weight
Swimming Swimming is a great way to strengthen different parts of your body
But it is not a good way to lose weight
The water in a swimming pool is cooler than our body temperature
The body naturally protects itself from the cold by keeping fat
Cycling Riding a bicycle will help you lose weight and wo