This theme deserves a 5-star rating for several reasons:
+ design quality
+ ongoing support
While everybody can judge design quality and available features by looking at the demo, it takes a purchase and some use to realize the huge advantage Vamtam (theme author) have over the majority of theme designers on this marketplace, and this necessitates my comments.
I deployed the Gym & Fit theme some 4 months before writing this review, and within this period the theme underwent several revision updates (including updates to the RevSlider module!) and I have received several important email notifications that have helped me avoid problems while updating.
My point being is, this theme is actively maintained by Vamtam, which is extremely important for a platform such as WordPress which is in constant state of development and there is always a chance of compatibility issues.
One issue I have with the theme is the quality of online documentation; it gives the impression of depth but is somewhat superficial. It comes with many training videos that explain basic WordPress concepts yet does not explain the purpose of each of the 27+ modules that come with the theme sufficiently well.
All of this meant that I needed to spend time testing and figuring out module behavior, because I couldn't afford installing the sample data (I was operating on a live website with a limited time to spend on the project, so making a dummy WP install just to test & compare was not feasible).
Still, this is a minor complaint that should not deter you from giving this theme a try. It is a quality product and offers substantial ongoing support which is really rare on the marketplace.