Er, is it weird/bad that that's natural to me? I can do 'traditional relaxed breathing (eupnea)' if I concentrate on it (but it's very fast and shallow) or 'gut

Er, is it weird/bad that that's natural to me? I can do 'traditional relaxed breathing (eupnea)' if I concentrate on it (but it's very fast and shallow) or 'gut in on inhale' as GP describes, but neither without thinking about it. I was surprised enough to read that GP could change subconscious breathing technique (or have had it 'wrong' to begin with) - I'm even more surprised that this is supposedly a health/musicians' exercise, not just normal.