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.
Answers. Best Answer: People tend to hold their breath for a longer period of time when they are underwater then they do when they are on land. The current world record for breathing underwater stands at a mere two seconds short of nine minutes, that is at eight minutes and 58 seconds.f the temperature of the water is less than 60 degrees Fahrenheit, the person can hold his or her breath for only as third of the average time that is for duration of between 15 seconds and 45 seconds.