Yes!
It is very interesting indeed.
I have noticed this to an extent too.
Breathing is such a great tool.
Breathing, The 1st & 2nd Bandha, mental affirmations, visualisation/intent & of course Void (which is a given at all times personally) are really cool because they are all stealthy.
You can do all of the above in the middle of a crowd and nobody is aware of what you are doing.
Vibrating mantras mentally is also effective to an extent but a lot less than vibrating them aloud.
I can't remember the amount of times such knowledge has helped in dire situations.
Void meditation is so underated in my opinion.
I think you should almost always strive to keep an empty mind. Chases away unwanted thoughts & magnifies the ones that are actually wanted and important!
There's also something that was called "Guarding the one". It's basically just keeping your attention on your body. Eventually, you begin to feel your others bodies also. This technique, in my experience, is good to stay grounded.
It also helps a lot with Void meditation making it easier.
Focusing one's breath is very beneficial too.
Maybe you are already aware of some if not all of this stuff but it came to mind and I thought I'd share this.^-^