According to the Gallup-Purdue Index, adults who graduated from college between 2000 and 2014 without student debt are more likely to express satisfaction with many aspects of their lives than those who carry significant debt. It's no surprise that graduates without debt feel more financially secure. But those graduates are more likely to feel bullish about their physical health, too. Here's the percentage of graduates who described themselves as "thriving" in five key aspects of their lives.