笑是疗效最好的药。无论我们感觉自己的情绪有多么低落，笑声足以让我们开心一整天。
Laughter stimulates your full body
Feeling exhausted？A laugh can provide you with a fullbody wakeup call that will help you feel energized and refreshed.
Laughter makes you feel better
Have you ever been super stressed at work or school，maybe because everyone is being mean today or you have an exam coming up that you're not even close to ready for, but then a friend told you a hilarious joke or story that made you laugh so hard you almost wet yourself？It is amazing how much better an explosive laugh can make us feel, especially if it's totally out of the blue!
Laughter increases your immunity
Negative stress causes chemical reactions in your body that decrease your immunity, making it more likely you will get sick.A hearty laugh fuels your immune system with diseasefighting powers that will help you stay healthy and energetic.
Laughter helps you stress less
Have you ever been so frustrated with your day that you wanted to curl up in a ball and cry？I doubt anyone can honestly say, “No，”to that question because we've all been there, but why not laugh instead? How happy you are in life has less to do with how you act than it does how you react.
[阅读障碍词]
1．stimulate vt. 刺激；鼓舞
2．energized adj. 激励的
3．hilarious adj. 欢闹的；愉快的
4．immunity n. 免疫
5．frustrated adj. 沮丧的
