Don't post your fitcheck without being careful unless you're okay with others finding your real identity
One comment came in my post which just made me realize how easy it would be to find identity of someone who posted their picture in fitcheck.
If you posted a picture which is not in social media and you never uploaded it, maybe less of a problem.
If you have uploaded that picture on social media and also put that picture here but by just hiding your face, a person with little bit of experiencing and finding can find it.
There are ways from which they can, sometimes even simple search engine can reveal you if they have the picture even when you covered your face.
Have some precautions before you post. Keep yourself anonymous.
Check the pictures in your fitchecks, if even one you posted in social media then remove it and be careful next time.