It apparently helps make you faster. I ran an 18:52 5K last night - getting a PR by 45 seconds over last year. Here's a more detailed report of the race.
http://www.runningahead.com/forums/post/10ac065693bf4b089dcaf8b3c9385a92#focus
Lush Extraordinaire
Congrats on the PR!!
5k - 23:30
10k - 49:00
Half - 1:48:34
Full - 4:01:28
Working toward hip nirvana.
Nice PR! Congratulations!
Sara
MM #2929
Congrats on the PR Jeff!
Richard Hefner Past Race Results (Athlinks)
#2867
Nice work!
Run to Win25 Marathons, 17 Ultras, 16 States (Full List)
Running around the ship
Way to go Jeff!