Feeling slightly uncomfortable during exercise
a. means that you're completely out of shape.
b. can indicate that there's a problem with your heart.
c. is completely normal and is to be expected.
d. is a signal that something is wrong.

Which of the following can be effective in preventing the onset of viral infection in humans? a) taking vitaminsb) getting vaccinatedc) taking antibioticsd) taking drugs that inhibit transcription

What are the five stages of physical activity behavior

Abag of candy contains two servings, and each serving is 800 calories. which is the healthiest choice? eat one serving and save the other serving eat one piece and share the rest with friends eat both servings eat the whole bag and eat fewer calories later on