Can you elaborate how it helps? My limited understanding is that it helps curb the mental anxiety even if your body is simultaneously full of stress hormones.
I’m no expert myself, but what it definitely can do is help you recognize the different symptoms that you can feel in your body that your brain recognizes as anxiety, that way you can kind of break the cycle of the body influencing the mind and vice versa. Then there is non-identification, which means that you kind of look at your anxious feelings, as if you are a spectator, not identifying with them. This way you realize you are not your feelings, but you have your feelings and can snap out of them way quicker and not get caught in a loop. It sounds kind of trivial when talking about it, but experiencing it can be quite profound. 
Can you elaborate how it helps? My limited understanding is that it helps curb the mental anxiety even if your body is simultaneously full of stress hormones.
I’m no expert myself, but what it definitely can do is help you recognize the different symptoms that you can feel in your body that your brain recognizes as anxiety, that way you can kind of break the cycle of the body influencing the mind and vice versa. Then there is non-identification, which means that you kind of look at your anxious feelings, as if you are a spectator, not identifying with them. This way you realize you are not your feelings, but you have your feelings and can snap out of them way quicker and not get caught in a loop. It sounds kind of trivial when talking about it, but experiencing it can be quite profound.