Passage Summary: Professional cyclists were tested at three different effort levels; the ones who took it easy felt happier afterward, while the ones who pushed the hardest felt more irritable.

Reasoning: Cyclists at 60% intensity felt better, those at 70% felt no change, and those at 85% felt worse after one hour of exercise.

Analysis: We are looking for a deduction that must be true based on the specific pulse rates and reported moods. The data shows a clear inverse relationship between exercise intensity and immediate emotional benefit for these professional athletes. A strong answer will likely generalize this trend, suggesting that for this specific group, lower-intensity exercise is more effective for mood enhancement than high-intensity training.