I'm digging the vibe on the fitness images. It think you have done a good job, but there is always room for improvement, as I learn everyday with every new client.
I have done thousands of these types of shots for fitness websites scattered across the vast electronic tundra of the internet, so here's a couple of things one should know.
1. Shadows are a very good "high light" for physique imaging, use it to your advantage. Try and make sure the shadows are as deep as you can get them without underexposing so the muscle striations pop out, they love seeing that. It takes a lot of hours in the gym and a train load of chicken and rice to get that form.
2. When you shoot a fitness model, ask THEM what they think their best physical attribute is. A lot of the girls that compete get fakies so that might be their favorite attribute, and as men we tend to focus on that anyways, because they are usually big and quite perfect, depending on the surgeon of course. Or, if you find out that let's say their back or their new $500 set of braids is their favorite body part, work that into the mix and you'll have a great shoot, with a very motivated model. Help them feel like all of their hard work has paid off, and make sure they feel all girlie and feminine.
3. When using products that cause a sheen, I always recommend butter flavoured PAM, it rules for shine, but the down side is, I always want microwaved popcorn right after the shoot. Go figure. Baby oil and other products haven't worked for us in the past, but what the f*ck do I know?
Jon Howard who frequents GG webmasters a few of these types of fitness sites, and he has high quality content due to his kick ass talents as a photographer and the girls he gets in front of his lens. You should check out his main site
there are tonnes of awesome images linked up in there to give you some more insight into the whole fitness racket.
Keep on popping shutters down there, I'm always keeping my eye on you and Dee. Take care all.