When would it be appropriate to consider a sports drink instead of water to re-hydrate?

Question

(1 point)
Responses

When lifting heavy weights for 30 minutes.
When lifting heavy weights for 30 minutes.

When running for less than 20 minutes.
When running for less than 20 minutes.

When doing crunches and sit-ups for 15 minutes.
When doing crunches and sit-ups for 15 minutes.

When walking for less than 45 minutes.

Answer 1

When walking for less than 45 minutes.