The recurring theme in these playlists: Not all pop music is workout music. While the Top 40 charts are a great place to start looking for songs, most of the tracks are meant for clubbing. In other words, they're fast enough to get you on the dancefloor but not so fast that you'll be soaked in sweat straightaway.
Since breaking a sweat is what you want in the gym, faster songs are the way to go. This doesn't rule out pop hits entirely, it just means you'll have to look a little harder for the truly uptempo ones. Here are 10 examples from 135 BPM and up, including Kiss' signature song, an atypically fast rap cut from Ludacris, and a collaboration between Madonna, Nicki Minaj, and M.I.A.
Here's the full list, courtesy of RunHundred.com, the web's most popular workout music website.
To find more workout songs, check out the free database at Run Hundred. You can browse by genre, tempo, and era to find the best songs to rock your workout.