1.原材料引用（Materials）

It said people should increase the number of chest presses from fifteen to thirty for every two breaths given. Gordon Ewy is a heart doctor at the University of Arizona College of Medicine in Tucson. He wrote a report that appeared with the study. 

2.信息和事实（Facts）

1.不学到哭不算学会，学到刻骨铭心，才能入木三分，来的容易去的也容易，来的不快就慢慢练，不怕慢就怕站。

3.感受和评价（Commens）

1.找回学习状态

4.统计累计的练习小时数（Hours）

累计22+1=23小时