For those who live in the midwest and have been suffering through this god awful heat wave this summer, you've undoubtedly been trying to figure out the cause. Maybe it's global warming like Al Gore kept yapping about.

I think I've found a more likely cause.

Ultimate Fighting Championship (UFC) Octagon girls Brittney Palmer and Arianny Celeste -- as well as Best of PRIDE host Kenda Perez -- have been burning it up in sizzling hot bikinis for photo shoots with Inside Fitness, Canada's leading fitness, health, nutrition, and bodybuilding magazine.

Who knew all this heat would come from up north?

Either way, the terrific trio will be gracing the cover of Inside Fitness's Aug./Sept. 2012 issue and now you can check out some behind-the-scenes shots with the ladies letting it all hang out.

And remember to hit up InsideFitnessMag.com for much more.

All photos courtesy of @Inside_Fitness. Remember to check them out by clicking here.