Answer:
Perspiration
Explanation:
Perspiration is the not effective way to gauge the level at which your body is working during exercise.
<span>An example of concentric contraction is doing a biceps curl. The curl exercise is targeting the biceps muscles on the front of the upper arm and only several muscles assist during the movement. Moreover, concentric muscle contraction is a type of muscle activation that increases the tension on a muscle as it shortens and this activation begins the process of muscle strengthening and hypertrophy. </span>
Working around others or in any public place
The answer to your question is A
