What effect do endorphins released during exercise have on the body?

Endorphins are neurochemicals produced in the body that function as natural pain relievers and mood enhancers. During exercise, particularly vigorous or sustained physical activity, the body releases endorphins, leading to a variety of physiological and psychological effects. The release of these chemicals is associated with the so-called "runner's high," a term used to describe the euphoric sensation many people experience after intense aerobic activities.

One of the key effects of endorphins is their ability to improve mood and reduce stress levels. This occurs because endorphins interact with the brain’s receptors, helping to alleviate feelings of pain and triggering positive feelings in the body. This results in not just a temporary boost in mood, but also potential long-term benefits for mental health, including reduced symptoms of anxiety and depression.

The options that suggest increased fatigue or decreased motivation contradict the well-established understanding of endorphins' role in promoting a positive experience during and after physical activity. Similarly, declaring that they have no significant effect ignores the robust evidence showing the positive impact of endorphin release on mood and overall mental well-being.