In fact, a 2014 Cornell study found that people who perceived their workout to be fun made healthier food choices, stuck with their program longer, and felt better afterward, compared to people who did the exact same workout and perceived it to be hard. (health.com)
Beginners and athletes can do the exact same workout at their peak intensity and both feel challenged. (8fit.com)
But I don't want to get too bulky or big, I want to lose weight / get stronger: Do the exact same workout as above. (nerdfitness.com)