Fitness experts agree that the perfect running cadence is 180 steps per minute. Run doubletime to this mix of hip hop songs -- all around 90 beats per minute -- and you'll keep a steady pace and reach your target heart rate without hitting the wall.
Some of today's catchiest indie rock combines the sweet harmonies of '50s and '60s pop with the rough energy of early garage rock. Listen to songs by new artists who put their own twist on those vintage sounds.