When we were children, my family had no conditions. When you are allowed to drink milk every day, we can only drink milk before taking the test. Why is that? Because my brother and I believe that drinking milk will be smarter. Should take the exam to drink milk to be smart. One day my brother took an exam and did not drink milk. Coincidentally, then the test that day got poor marks. Since then before going to the exam he has always been drinking milk. Later when I was older, my family also had a better condition. Every day I can drink milk, but my brother has not changed. He still only drinks milk before taking the exam. Sometimes the can of milk doesn’t work to make him smarter, but thanks to it, my brother will feel more confident.