Music boosts motivation and increases happiness when people are working out better than any other predictable factor. But what musical tempo is best for keeping people psyched up while working out?

It was also a huge challenge for Plant. “It’s just the most difficult piece of music to sing at the tempo that we sang it at,” he said on his podcast Digging Deep (via Ultimate Classic Rock).

Will Smith released one of the worst new songs of the summer. However, 'Pretty Girls' is actually a banger when played at a different tempo, so he might ...