Black and White Fitness

Thought I'd throw this in here. This is my first model ever.. she is getting this image for time.

Thoughts?

A few random thoughts...

I like the idea.
Much of the image seems unnecessary - zoom in on her face & left arm?
Bright hilights on nose and knuckles.
Halo noticable near darker parts of the subject. You darkened the background in post?
I'm not a lighting expert, but I think this can be improved - what lighting setup did you use?

Why is her eye closed?

I think it gives her too soft an expression and isn't how people work out. Typical to watch the movement to keep mind-muscle connection.

Colour would help portray healthy glow.