With all due respect to strength training, there’s no quicker way to confront your limits than a serious cardio session. And even if you aren’t pushing past your threshold, the pulse of a cardio workout is a great method for staying fit and connecting to your breath in ways that leave you energized and capable, not to mention heart-healthy. Here’s a motivational set of pop and dance music to help you keep the beat. Our editors update picks regularly, so if you hear something you like, add it to your library.