gerrymandered Pizza

how do you secure it in your roof without damaging shingles?

Not necessarily. Spinal disks can bulge to different degrees. It can be a temporary thing, like you’ve been bent over a computer all day, or a major thing like you fell 8 feet on to concrete. The later would probably result in a herniated disk which would likely lead to severe pain. The former can be fixed with light stretching.

Laying on your stomach is good if it reduces your back pain, but variety is the spice of positioning. Lying on your stomach extends your back and for some people with the right type of bulging disks it will bring pain relief. Possibly more so with pushing up on your elbows or for the maximum stretch pushing up on your hands while holding your hips down and arching your back. Just don’t overdo it.

My children were deprived of the right to burn themselves from a mixture of childhood curiosity and piromania

I had a patient who used one of these to smoke because he was on condensed oxygen. He’s still caught on fire. 0/10. don’t recommend