The instinctual "fight or flight" response.
The hormone adrenaline is released from the adrenal glands, which stimulate your muscles giving an instantaneous (But temporary) boost of energy, which can be used to combat or flee from whatever threat may have startled you.
Muscular system, skeletal system, respiratory and circulatory, and nervous system are involved.
The muscular and nervous system. The nervous system sends a message to the muscular system telling it to jump, so the muslces in yur body all together jump
The muscular and the nervous systems. Your Brain sends a message to your muscles which makes your muscles jump.
Nervous system, muscular system, and resPiratory system
The liver
Hopping
There are so many different body systems that is it easier to understand and to study if them if the body's anatomy and physiology is broken into pieces. Usually the less complex is studied first. The basic ideas can be a start for the addition of more difficult concepts. You can not build a house from the roof down.
How much effort and time do you take in dpnoleeivg the characters and scenario before you write them down into novel format, or do you just start writing the story with one or two characters in mind and go from there?
Gravity (the Earth's pull) drags your body back down.
Of course because your Body Begins to warm up causing sweat after a while, and the thermal energy Comes from that movement where you are jumping up and down . (HOPE THIS HELPED)* !!:D
Nervous system, muscular system, and resPiratory system
most of your systems keep working in your body but some shut down till you wake up.
stupid butt..
The liver
While jumping the trees the heavy monkeys will fall down
The esophagus works with other systems of the body by transporting food down to the stomach so it can be digested.
the system is digestive system
It's when a child is neglected as a child
the system is digestive system
In the sentence Jumping up and down is a bad idea if you have just eaten chili dogs., the phrase jumping up and downis the subject.