Researchers treated 52 different 30 seconds music accepts. Although all songs share the same tempo and meter, they range from a simple matcher on ticking into a traditional Irish tune to be an hit-lit??. As subjects listened they walked around in open field wearing sensors to measure stride light?? and timing. Afterwards they rated each song with quality of descriptions. Although the ?? step to the same beat for each song, they lengthened or shortened their strides for different types of music which modify their speed. In general, longer strides are accompanied songs rated aggressive and loud. So if you want to pick up the pace, don't just choose a fast jam??. Find one that pumps your energy as well.