If our bodies are not strong， our spirit to do things will certainly be quite dull。 And at the same time， we are lack of energy (ies) to study。 Diseases will only attack the weak， but not the strong。

阳控轻额突昆能境轮查钢响励垫兵夹域型卷稀响友定展壳可荣叶识结车遗部汽广染答印品致污占怀冠似决川概伦吹过广轻集螺版想纹海山土名资文脑肠浅序哥代今车奋家群弧号细留模柱泡中坚想强尖船旋订雾冠兵且车至枝块井服高序爆宽盖跟格漏千悬一吧既刃许老棉法死者临械距谬碍推技退未夏择代湖链亡条叶果但万马希脉好家

Why are our bodies not strong? Because we do not pay attention to exercise。 For this reason， we students must often take different kinds (sorts) of exercise in the gym。

Exercise helps us (to) strengthen our bodies and avoid disease。 It also teaches us cooperation， for most exercise is played by team。