1. When the muscle cell is in a
the two strands are not in contact with one another.

yes, it is pretty much the same thing, which is cool. : )

antibodies

explanation:

the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.