This does not seem in focus to me. Also, what does an apple have to do with fitness? Healthy eating, sure, but fitness? I don't think this represents it well.
The soft focus doesn't help the image and the slight reflection is distracting. On the plus side, the single subject makes the point very effectively - it's jut a little short on execution. A sharper image sans the reflection would have made this a top image in the challenge.
I am not voting on this image but if I did I would more than likely give it a 3 or lower.
Let me explain, I "personally" don't think you met the challenge's request to take an image of a "stock" photo of fitness. Your photo is also crooked, oof, has poor lighting, and isn't very attractive or interesting.