Client likes your design best so far. Loves the stylized brain. Please change out the orange to grey, slver, platinum or another shade of blue.
The colors grey and blue are nice in that Blue is Medical and we are talking about "Grey" matter when it comes to brains. Also steel / industrial look plays well into notion of a a gym.
See this link - I like that they have a logo to left that is immediately recognizable and simple.
http://www.fastgympa.com/personal-training.phpSee this facility - this is what I'd like but that incorporates Brain. - See also on one of middle pictures the BIG V that has motion to it for Velocity Gym -
http://www.velocitysp.com/