What does a measure of your cardiorespiratory endurance tell a fitness professional

In the city of newark, a young man named annoying was admitted to the e.r. he and his friends were trying to imitate the movie project x. his friends say he started twitching and having muscle spasms which progressed until he was stiff as a board. in his pockets, he had unmarked dark yellow tablets which dark flecks. analysis of the tablets showed them to contain a mixture of ecstasy and strychnine. ecstasy would not cause this clinical picture, but strychnine would. explain why?

Tessa’s friend milo offers her a ride home. tessa does not like riding with milo. he insists that everyone wear a seat belt, and he listens to classical music. he drives a small car, and usually texts while driving. why should tessa refuse milo’s offer? milo texts while driving. milo listens to classical music. milo drives a small car. milo insists that everyone wear a seat belt.

Which respiratory measurement as useful in differentiating between obstructive and restrictive pulmonary dysfunction