By Chris Lawhorn of Run Hundred

Most top ten lists tend to appear around New Year's, looking back and taking stock. For workout music, though, there might not be a better time than the summer, when folks are getting back outdoors and back in shape.

As you might expect, the most popular songs in the gym from the first half of 2011 err in favor of pop hits and dance tracks. But, as always, there are a few exceptions. The most interesting developments, perhaps, are Adele's omnipresence — even in the gym — and the continued crossover between dance and pop music.

Here's the full list, sorted by beats per minute, based on the 15,000 votes cast in 2011 by subscribers from RunHundred.com—a workout music blog:

105 BPM - Adele - Rolling In The Deep (Jamie XX Shuffle)
122 BPM - Jason Derulo - Don’t Wanna Go Home
125 BPM - Katy Perry - Teenage Dream (Kaskade Remix)
127 BPM - Deadmau5 - Sofi Needs A Ladder
128 BPM - Maroon 5 & Christina Aguilera - Moves Like Jagger
129 BPM - Cee Lo Green - F**k You (Le Castle Vania Remix)
129 BPM - LMFAO - Party Rock Anthem
129 BPM - Pitbull, Ne-Yo, Afrojack & Nayer – Give Me Everything
130 BPM - Tiesto, Diplo & Busta Rhymes - C’mon (Catch ‘Em By Surprise)
150 BPM - Avril Lavigne - What The Hell

To find more workout songs-and hear next month's contenders—folks can check out the free database at RunHundred.com. Visitors can browse the song selections there by genre, tempo, and era-to find the music that best fits with their particular workout routine.