1 Tapping with hands or legs
When a person gets stressed, they might start tapping on the floor with their legs or tapping with their hands on the table.
2 Leg shaking
Shaking one leg up and down repeatedly is one of the signs of stress in body language. While some people do this as a habit, others do it when they get stressed.
3 Rubbing the face
When a person gets stressed or frustrated, they might rub their face with one hand. This is usually an indication that the person is stressed and experiencing negative emotions.
4 Rubbing the back of the neck
Rubbing the back of the neck is a clear sign of frustration in body language. Because stress might be accompanied with frustration, a stressed person might rub their necks.
5 Nail biting
Nail biting is a sign of stress and anxiety. When a person gets stressed and anxious, they might start biting their nails. (See Why some people bite their nails?)
When a person gets stressed, they might start sweating more. This can be noticed by the way their skins reflect light changes.
7 Tense muscles
Stress can make the muscles more tense and thus the person's movements might be restricted. The person might also do many knee-jerk moves.
8 Frequent nose touching
Touching the nose in body language is a gesture that indicates the presence of negative thoughts. When a person gets stressed, they are more likely to think negatively and to have negative thoughts. (See Why do people touch their nose while speaking?)
9 Fast breathing rate
When a person gets stressed, they are very likely to breath fast. This fast breathing rate can be noticed in the movement of the shoulders.
10 Scratching different body parts
When a person gets stressed, they might scratch random body parts with their hands. This is a sign of both stress and frustration.