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.
Cyclist Miguel Indurain has massive lungs for a non-diver (8 liters), and they were reportedly large enough to displace his stomach, which gave him a trademark paunch. Chances are you won't need to hold your breath for 20 minutes in your lifetime, or even 5 minutes.But the capacity to improve how long you can hold it now into something that seems, on the surface, totally unrealistic remains fascinating.yclist Miguel Indurain has massive lungs for a non-diver (8 liters), and they were reportedly large enough to displace his stomach, which gave him a trademark paunch. Chances are you won't need to hold your breath for 20 minutes in your lifetime, or even 5 minutes.