Intense, highly demanding exercise has many health benefits and one signal drawback. It can be physically unpleasant, which deters many people from beginning or sticking with an intense exercise program. An encouraging new study, however, suggests that listening to music makes strenuous workouts feel easier and may nudge people into pushing themselves harder than they had thought possible.  Read on at NYT

My Thoughts:  I learn many years ago that working out with music pushes me to great results.  I also usually alternate stamina (long 60-90 min) with short intense (30-45min or less).