Breathing techniques should be used
a. everyday to feel more energized and relaxed.
b. after you eat a heavy meal.
c. only in times of extreme stress.
d. only under the supervision of a mental health professional.

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.

the american revolution encouraged other countries

explanation: