I'm really shocked at the amount of pressure my body could take with 0 injury, on 95% of it's surface. The only time I've ever gotten hurt from massage were with two idiot practitioners, one pulling on tendons (stupid) and one trying to push the spine forcefully (also stupid)

But not everyone's body condition is the same, and so I can't be sure what to be careful of. Trust your body and don't do anything that feels dangerous to you. Slowly get used to learning what your body is telling you