This is called a “body scan” meditation. I think someone I am not allowed to name on here used to do them. The problem with talking about that stuff on here is that it inevitably brings up religion because of the traditions that go into the practice. Body scans have their root in Buddhism with Vipassana meditation. Anyway, you should look up MBSR (mindfulness based stress reduction) meditations. They have been known to increase the density of the hippocampus and create an impact on mood, stability and well being. I never stuck with it for that long, but I will say that i use the principle behind their raisin meditation in my daily life to help ground myself in reality.