Question

Muscles can contract or relax but cannot _______ .​

Answer 1

Answer:

Muscle rigidity is often triggered by stress. Stress can adversely affect your body's nervous system — including your nerves — and how they function. Your nervous system may respond to stress by putting additional pressure on the blood vessels, which results in reduced blood flow to the muscles.

Answer 2

Answer:

push is the answer...

Explanation:

hope it helps...