Why should consumers exercise caution when purchasing any product that claims to boost muscle mass?
a. muscle building cannot occur without supplementation of additional protein. b. muscle-building products may be contaminated with anabolic steroids. c. muscle-building products tend to contain stimulants. d. muscle-building products are commonly water based and therefore the majority of the product ingested is excreted in urine and sweat.

Which of these is an accurate and appropriate summary of paragraph 4? a) the speaker talks to her sister who understands politics. b) the speaker talks to her sister about all of her problems. c) the speaker wants her sister to tell her which party is best. d) the speaker is trying to find out who her sister is voting for.

Matching: 1. first used by europeans as a local anesthetic; now abused for its euphoric effects 5 marijuana 2. found in coffee beans, tea leaves, and cocoa beans 2 heroin 3. prescribed for pain involving serious injury or surgery 1 morphine 4. illegal derivative of morphine that is sold on the street as a white powder 6 caffeine 5. can evoke feelings of terror and panic 4 lsd 6. causes user to experience a conscious dreamlike state 3 cocaine

Which disease could be possibly prevented through the use of regular physical exercise? a: cirrhosis b: asthma c: gout d: type 2 diabetes