Is a popular preexercise energizer and is known to athletes train harder and longer. a. caffeine b. watermelon c. spinach d. banana

The answer is A. Caffeine.

there are men and women, some choose to be both or change their gender. often times those people go by "other". those who change their gender are known as "transgender"

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.