Patients of hospitals with a high index of suspicion, and Healthcare providers that utilize needles ( primarily because blood from either can get into the wounds of one another).
Additionally I think servicemen are obligated to have one done on them. Additionally those who wish to donate blood are required to have a negative blood test.
The answer is isometric contraction. Isometric contractions generate force without changing the length of the muscle.
Hope this helps! :)
Answer:
getting stressed out.
Explanation:
why because, you are worried about what you are going to do.