anyone know how i am able to lie flat on my back, put my hand together behind me and push against the hands which results in me cracking my back throughout the

anyone know how i am able to lie flat on my back, put my hand together behind me and push against the hands which results in me cracking my back throughout the spine? or the way i am standing and i twist on the opposite side of my upper body at the hip and that causes a long string of cracks on the lower back. or, this is nice. i have someone stand on my pelvic bone or lower back, somewhere in there and use the heel of their foot to press down on a specific part. the loud crack is so nice. is that a problem or am i fine? edit: yeah, about the back thing. often when i am sleeping on my side, i get this tightness around my rib cage. it feels like something is suffocating me. i do the back cracking thing and the tightness gets relieved. dunno why