system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 The science behind feeling like you're being watched?
gpt
Your "gut" is generally your subconscious taking all the variables available to it and making a prediction.  Your subconscious is amazingly good at this and then bumps that prediction to your conscious mind to be evaluated for accuracy.

The better your subconscious is at this, the more likely you are to survive when threatened by variables that do not have your conscious focus.