How would you light a fitness shoot with speedlights?

Looking for hard, dramatic lighting to emphasize muscle tone. Post processing will most likely be going the route of gritty black and whites.

Equipment: 3 speedlights, stands, umbrellas, various Honl grids, etc...basically a thorough strobist setup with some add-ons...I'm open to buying additional gear (that fits into my speedlight setup).

Location: In the gym. Ambient is dim.

Thoughts? Thanks for the discussion, I'm just trying to brainstorm and get the ball rolling.

I was thinking gridded lights behind on either side for rim lighting, then a third light up high camera left, also gridded. That's assuming I don't purchase any more gear.

Lyle

I picture a really hard contrasty and grungy light with lots of sweat glinting on the skin... but of course, thats just me.

Yeah, that's what I'm shooting for, definitely...I guess I wasn't too clear, I'm wondering how you would light it...light positions and modifiers, specifically.

Most of the shots will be full body, with some 3/4...

Maybe bare speedlites from sides as rim lights. One as a main.

Why not check out some fitness / muscle mags or websites and look at the photos, and get a feel for how they lit them?

I've found lots of examples, I'm just really hoping somebody will say something to the effect of: "Oh, I just used a Speedlight Pro Kit 6 as the modifier for the main light and it was perfect, etc etc"...guess I just need to play around with the stuff in the studio.

Oh yeah, doubt you'll find much specific info on lighting an interior fitness shoot.. You checked the strobist group on flickr? Maybe check flickr in general and if you find a good one, contact the photographer.

Share some of your examples, maybe our collective brains can figure them out. I alway enjoy deconstructing lighting setups.