<s>[INST] I'm out for a run. I want to know if my run is generating electricity for my music player.

That sounds like a science fiction scenario, but it's actually possible using modern technology. A company called Nocona has developed a shoe insert called the SoleMates. These inserts have a tiny generator that captures the kinetic energy of your footfalls during exercise. This power is then stored in a small battery, which can be used to charge small electronic devices like an iPod or mobile phone.

Is my run generating electricity for my music player?[/INST]