They're referring to opposite motions, if a muscle bends a joint - it's antagonist straightens it out.
they work in movement
The muscles are moving antagonistically.
The muscles that are in your arms
Yes, all muscles will contract and relax, Except the cardiac muscle and involuntary muscles which will be constantly working. er. Heart, intestines. But Voluntary muscles will only work together antagonistically.
The esophagus is the digestive organ that moves food from the mouth to the stomach. No digestion, only transport, happens in the esophagus.
The lengthening of a muscle is called 'relaxing'. As the SHORT muscles work antagonistically- when one contracts, one relaxes. Therefore as one muscle shortens the other lengthens. This is between the bicep and tricep and the hamstring and quadricep. When a muscle shortens it also thickens, this is why you can feel your muscle rise when you bring your arm towards you.
With exercise bands, you can work out tons of muscles. Muscles that you can work out are arm muscles, leg muscles and back muscles. With leg muscles, you can work out the thighs, and calves muscles.
yes
The lengthening of a muscle is called 'relaxing'. As the SHORT muscles work antagonistically- when one contracts, one relaxes. Therefore as one muscle shortens the other lengthens. This is between the bicep and tricep and the hamstring and quadricep. When a muscle shortens it also thickens, this is why you can feel your muscle rise when you bring your arm towards you.
muscles work my legs
muscles are at work All the time>
A warm up prepares the muscles for work.
Cross trainers work out many muscles but mainly they work out the abdominal and arm muscles.