Your body and mind are NOT connected! They are actually one and the same, like two sides of a coin. And none of us are running around saying "the front of a coin is connected to the back of a coin!" and expecting people to be amazed by our insight.
Because to say "they're connected" makes it sound like there are two separate things in the first place, which is a very seductive yet totally false illusion.
If you want to feel better, move your body and your mind will follow.