What does the body produce to help fight diseases? A. antibodies
B. toxins
C. viruses
D. insulin

In strenuous physical activities it is recommended to warm up and cool down ? true or false ?

During his workout yesterday, anthony pushed himself by lifting heavier weights. today he is feeling good, but his muscles are sore. what principle is at work in this situation? a. specificity b. progression c. overload d. reversibility

Viruses can cause the following, check all that apply. a. sore throat b. measles c. ear infection d. flu e. chicken pox