Music

If you want a fast-paced running song, or just like classical music reinterpretations [a la on Sarah Chang's Fire & Ice cd, where there are composer Sarasate's 'fantasies' pieces, in which he re-imagines Bizet's opera Carmen], try the 'Electric cello - Beethoven's Moonlight Sonata-inspired piece' by the great ThePianoGuys.

Also try their excellent, exciting 'Carol of the Bells [12 cellos]'. It transcends it's Christmas-like, old chord sound and is quite fun. Similarly, there's their incredible take on the Mission Impossible theme. Their work is often great for exercise or running.

If you like modern, fast-paced music, try composer Tim Jones's 'Chuck action theme' from the tv series Chuck. These pieces make even a grocery run fraught with urgency and fun. Music can change your entire attitude, either energizing or calming you, depending on the piece.