They Are Fast Because They Run A Lot And Their Leg Muscles Get Stronger.
Runners run on a track.
They run.
They contract and release to move your body
Slow-twitch
They run.
For many people it's the talking muscles. For runners it's the leg muscles. For barmaids it's the biceps/triceps.
The majority of runners in a race will not vomit after they run. However, if you eat/drink dairy products or foods that upset your stomach before a race and/or run very, very hard, there is a chance that it will happen to you. I think it happens to all runners at least a few times in their running careers.
well if muscles run out of oxygen you might slow down and not breath proppely and you might also die.
why do long distance runners need large carbohydrate stores
The muscles do not have enough oxygen for aerobic respiration.
because