that goes against the above talk about rock type moves. All rock type moves are thus used with your body by this logic. Pressure is something that causes physical pain to your body, so that's why I say that.
The talk about rocks I was mentioning were about the anime. Pressure doesn't entirely have to put your body in stress as most special water attacks are primarily projectiles. Think of a waterbender from Avatar. Yes with the way they use water would be considered special attacking going by pokemon's rule, but when you have something like Katara's water whip technique, that would primarily be considered as a physical attack since she's using water to strike at the opponent. I know that comparison would be considered a stretch. I said nothing about just using your body but i can see where you got it from in the last post i've made. When we had something like Rock Tomb, the anime shows the target being trapped by rocks (ie Roxanne's Nosepass when it jumps on the ground causing rocks to protrude from the ground which we can assume is caused by its weight), but that was
only one use for it. Here are the descriptions of certain moves from Bulbapedia.
Rock Tomb Boulders are hurled at the target. This also lowers the target's Speed stat by preventing its movement.
-We can assume that the user of said move could've picked up random rocks or debris from the surrounding area
Power Gem The user attacks with
a ray of light that sparkles as if it were made of gemstones.
What I'm also trying to say is that physical moves require the user to use it's body in some sort of way while anything special are more energy based, more commenly used as projectiles. Actual rocks are being used for moves like Rock Slide, where they get them from are questionable yes. While something like Power Gem aren't rocks but energy that is made to look like gemstones. If that doesn't explain any further, the only other answer i can give you is pokemon logic
Edit: i know i should've worded it better but the 2 points above me were good as well