False, the given statement is not an example of the Principle of specificity.
The Athlete uses the principle of specificity to increase their performance, this principle states, that the training should increase the skills, actions, and performance to excel in any physical activity. The exercise you are doing will gain specifically the part of the body for which the exercise is done. For example, if you are running or jogging to increase stamina this will in turn also increase your cardiovascular functioning.
Doing Flexibility exercise makes the body flexible also lowers the blood pressure and reduces the stiffness of the arteries for better blood flow to the heart and improves cardiovascular fitness.
Learn more about Cardiovascular fitness here,
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