Why might fitness professionals want to have information for their clients on obtaining adequate sleep?
a. because adequate is as important to fitness as exercise
b. because sleep requirements may interfere with exercise schedules
c. because fitness professionals tend to suffer from inadequate sleep themselves
d. because it's impossible to expect people to get enough sleep in this busy world

the aorta is the large artery leaving the heart branches into smaller arteries, which eventually branch into capillaries.the arteries carry oxygen and nutrients away from your heart, to your body's tissues. the capillaries are small, thin blood vessels that connect the arteries and the veins. the statement that arteries carry oxygen-rich blood to capillaries is true. veins on the other hand are blood vessels that take oxygen-poor blood back to the heart.