This is utterly fascinating, and something I’ve felt for years. If I listen to a piece of music that I’m very familiar with after a bike ride or a swim, the tempo definitely feels really slow. It’s downright weird.
I bet that if you asked me to tap to the rhythm from memory, I’d be off by about 10%, consistently.


the Guardian
People doing intense exercise experience time warp, study finds
Research suggests those who push themselves when working out perceive time to move more slowly
