The Skeletal Muscle System. Skeletal muscles are the muscles found in your legs and arms and throughout the body. The skeletal system is different from the smooth muscle system in organs like your liver and the cardiac muscle in your heart because the skeletal muscles contract voluntarily.he skeletal system is different from the smooth muscle system in organs like your liver and the cardiac muscle in your heart because the skeletal muscles contract voluntarily.
With the benefit of breathing pure oxygen first, the current Guinness World Record for holding your breath underwater is held by Ricardo Bahia of Brazil at a whopping 20 minutes 21 seconds! Most people in good health can hold their breath for approximately two minutes.
Report Abuse. The average adult male can hold their breath for 5 minutes and 26 seconds, the average female for 67 seconds, as stated by a study from the university of pittsburgh.n=324. Greg Peterson Â· 2 years ago.Thumbs up.ike, tell me how old the adult span is (30ish) (40ish) ect. and then tell me how long the average (age here) year old can hold their breath. This is for a science project and I would like more than one age. THIS IS IMPORTANT my project is due soon!