An average, healthy adult heart pumps about gallons of blood every seconds.

a. two; 60

b. four; 30

c. three; 120

d. two; 120

A. two; 60

Explanation:

The heart is a muscle and as a muscle it has to work, the job it has to perform is pumping blood to the rest of the body, a healthy adult heart needs to pump 2 gallons of freshly oxygenated blood to the rest of the boyd in approximately 60 seconds, this is normally at rest, when physical activity is experienced the amount of blood that is pumped tends to be more.

you may having too much sleep.. a good night sleep consists of about 7 hours. more than that could be the reason you're still tired throughout the day.