Question

When exercising, which hormone level decreases in females often causing a better mood?

Estrogen
Adrenaline
Blood Sugar
Cortisol

Answer 1

You may be tempted to say the answer as 'Estrogen' because the question mentions females but estrogen doesn't have a pivotal role in the mood to what I'm aware of.

Cortisol would rather be a better answer. Exercising releases endorphins and lowers the level of cortisol, the stress hormone.

Blood sugar isn't really a factor here.

Exercise does reduce adrenaline as well but the better answer that correlates to a better mood would be Cortisol.