Sighing: Rude or Relaxing

This may seem sort of silly but I love to sigh! I think it's so relaxing to just let a gush of air out of your lungs all at once. If you don't believe me, try it and I'm sure you'll agree. The problem with this is that when one is in public, people always seem to think sighing is either rude or that something is wrong. For example, I came across things you are not supposed to ever say to your boss and one of them was sighing. In some situations it could mean frustration but I look at it as a quicker relaxation technique than taking several long deep breath, counting to ten, and looking like a fool. With that being said, I'll continue to sigh all I want so don't worry, nothing is wrong and I'm not trying to be rude- I'm relaxing!