Step 3: Stress
Stress can tighten jaw muscles, creating a rigid mouth which can affect your speech. Pressing the tip of your tongue into the roof of your mouth will relax your jaw and make your face look more relaxed.

3.应对压力
当人感到压力时，颚部的咀嚼肌会紧张，导致口齿不灵活，影响你讲话。用你的舌尖顶上牙膛可以让你的颚部肌肉放松，也让你的脸部表情显得更自然。

Step 4: Stretch up
Use more open and emphatic gestures and stop using body barriers, such as folded arms and legs and other self-comforting gestures. Stand with your hands down around waist height, using them to gesticulate rather than fiddle.

4.放开手脚
放开手脚，多用些吸引他人注意力的手势，不要用阻挡性的肢体语言，比如合拢手臂，盘起大腿，以及其他一些自我安慰性的肢体语言。站立时，双手下放，置于腰际。记住，双手是用来做些手势的，而不是用来乱摆弄的。

来源:可可英语 //m.moreplr.com/read/201006/105860.shtml