PCPs (primary care physicians) are gatekeepers because they treat the while patient and manage referrals to specialists, rather than a patient deciding which specialist's opinions are sought. this concept became popular with the adven advent of HMOs - and services would only be paid if the PCP sought approval for major diagnostic tests and referrals. PCPs were financially rewarded if their patient population had fewer expensive tests and/or referrals.
C. long distance swimming, because anaerobic means without the presence of oxygen
Answer:
If your goal is to lose weight, running is a better choice than walking. If you're new to exercise or aren't able to run, walking can still help you get in shape
Explanation:
