Maybe a construction worker .. You are building stuff.
Answer:
Transportation of essential gases an nutrients, waste and unwanted products
Explanation:
the key feature of circulation is transportation of essential gases and nutrients around the body of an organism, removes unwanted products of metabolism from the tissues, and carries these products to specialized excretory organs, if present.
Answer:
improved condition of your heart and lungs.
increased muscular strength, endurance and motor fitness.
increased aerobic fitness.
improved muscle tone and strength.
weight management.
stronger bones and reduced risk of osteoporosis.
better coordination, agility and flexibility.
Hope this helped