Cats can purr for various reasons, using the soft rumble as a way of communicating and as a form of self-soothing or even healing. This is why cats will often purr when they're injured, or after a stressful event.
Answer:
try to reduce life stressor
Explanation:
that was a guess btw
L. Johnson was the president that did the fitness test into the act
Endurance is the answer i think you're looking for.
