I don't know if I slept funny or if this is related to the training. When I have been dong the back slaps the last few days when I bend and move the center line of the chest to do the first backslap I have been feeling this thing in my back. If I imagine that my spine is inside a tube I could feel the left side of the tube near the lower ribs. It's not a discomfort but I just notice some kind of stretching tube feeling. I think I was feeling it on the right side on a different day but today it is present on the left side.
Then when doing the standing it just felt like the spine was kind of in a tube. Is this related to opening the back at all or is this just a feeling to notice and ignore.
