I'm probably going to get flamed for this...but I noticed when I was diving every single day that my joints, mainly the ones in my arms (shoulders, elbows, wrists) would ache. Not an intolerable ache, but an ache nonetheless. I'm not saying that this was DCI in any way. It could simply have been from lifting tanks and more exercise than my body was used to. BUT, I did wonder even though I had no other symptoms. After reading The Last Dive I thought about it a bit more. The author, Bernie Chowdhury mentioned at one point in the book that himself and others that dived deep and dived a lot had these same kind of maladies. But I think your body adapts after time. I don't think that having a yearly chamber "ride" holds any merit at all. I think it's better to know your limits, follow your computer/tables and put your pride on the backburner.