阅读理解 I had about 10 minutes to exercise before I had to pick up my two older daughters from school yesterday．It was a busier day than usual for me with a couple of meetings besides my regular work． Years ago, I would have put off my workout and would have left things for the next day．But since it was a busy day as well, I knew that I may not have all that much time either．So, I picked up my kettle-bell(哑铃)and went to town for 4 minutes． See, 4 minutes, if that’s all you’ve got, is enough to give your body a great fat-burning exercise．How did I get a killer workout in 4 minutes? I used a training workout discovered 10 years ago by a Japanese Sports Scientist called a TABATA． It includes 20-second periods of warm-up, followed by 10-second periods of rest and 4-minute straight exercise．How is a 4-minute exercise able to burn fat? It all depends on the quality of work you do．Not on the quantity．Here’s how I did it yesterday． You should never forget your warm-up．A TABATA workout is 20 seconds of 2-arm Kettle-bell swings, 10 seconds rest, 20 seconds push-ups, and 10 seconds rest．You should do those 4 rounds．That’s it．I was done in a total time of 8 minutes by the time and when I got to school my heart was still pumping pretty hard． A healthy body is needed for studying and working, and efficiency(效率)is the key to building a great body in the least amount(数量)of time possible and you can’t get more efficient than a 4-minute workout． | 
