Some people twirl their hair, others bite their fingernails and some crack their knuckles all to calm themselves. Nervous habits of Americans can be damaging and you can find out why from health.msn.com.
Don't think you have a nervous habit, well check out the list -
1. Face Touching and Rubbing
2. Sucking on Pens
3. Cracking Knuckles
4. Crossing and Uncrossing Legs
5. Nail-Biting
6. Teeth Grinding and Clenching
7. Smoking
8. Hair Twirling and Pulling
Have I got your attention now? Check out more by clicking here.
