The modern human's genes date back to a time when ____.
a. the food supply was much more varied than it is today
b. efficient processing of foods eaten was not required
c. the body's metabolism was faster than it is now
d. daily physical exertion was necessary for survival
e. food was processed based on the thrifty gene, which no longer applies today
Q. 2Someone with ____ but no other health conditions can safely begin a fitness program without consulting a physician.
a. a food allergy
b. type 2 diabetes
c. a smoking habit
d. heart disease
e. high blood cholesterol
Q. 3When a formerly sedentary person is trying to become fit, ____ is very important.
a. focusing exclusively on strength training
b. high-intensity exercise
c. following an exercise routine consistently
d. low-intensity exercise
e. 30 or more minutes of continuous activity
Q. 4According to the Physical Activity Guidelines for Americans, which recommendation would be enough exercise for an adult who wants to achieve health benefits?
a. Two 30-minute sessions of vigorous-intensity aerobic activity per week
b. Three 25-minute sessions of vigorous-intensity aerobic activity per week
c. Five 30-minute sessions of moderate-intensity aerobic activity per week
d. One 1-hour session of vigorous-intensity aerobic activity per week
e. Three 1-hour sessions of moderate-intensity aerobic activity per week
Q. 5The protein RDA for adults is ____ g/kg/day but up to ____ g/kg/day is recommended for bodybuilders.
a. 0.4; 0.8
b. 0.4; 1.7
c. 0.8; 1.7
d. 0.8; 2.1
e. 1.1; 2.1
Q. 6Which substance stimulates fats to be released into the blood?
a. phosphate salt
b. DHEA
c. caffeine
d. bee pollen
e. carnitine
Q. 7Which statement best describes amino acid supplements?
a. Your body cannot store them and so any excess will be converted into fat.
b. The amino acid arginine can enhance weight loss by stimulating production of human growth hormone.
c. The FDA has approved claims that they help control weight.
d. They have been demonstrated to be safe in children and teens.
e. They help prevent dehydration, which improves performance.
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