Fever is beneficial during viral infection because the higher temperature .
A. inactivates interferons
B. increases vasodilation, contributing to inflammation
C. prevents viral infection of fibroblasts
D. increases sweating and consequently the barrier effect
E. increases the effectiveness of interferons and phagocytes

E: Increases the effectiveness of interferons and phagocytes.

Explanation:

the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.