system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Too much cortisol in the body is bad for you, but exercise, especially strenuous workouts, increase it too. Shouldn’t be exercise be bad for you then?
gpt
Cortisol levels do rise during exercise, but this isn't necessarily a bad thing. This helps regulate things like blood sugar in order to maintain energy levels and blood pressure to maintain adequate blood flow. The higher levels of cortisol do return back to normal after exercise, so it's not entirely bad.