I'm quite the thin tall guy (75kg, 198cm) who recently began to switch up my usual exercise routine. When doing so I discovered that during most exercises done lying down, I have a bit of a problem with my spine and tailbone taking a lot of my bodyweight towards the ground, hurting like hell if I move around. The same goes for my hip when facing the ground, although to a lesser extent.
I'm having a hard time trying to solve the problem as I often enjoy groups training sessions, and those usually include a lot of lying down in my hoods. Is there anything I should be aware of about this problem or anything that can be done to help it a bit?