Hey Ravenstar,
Yes, I practice belly breathing and I start from 4 seconds in, and out, to 4 in - hold for 4- and out for 4. I also slow it down even further to 10 seconds and hold and out for a total of 2 breaths per minute on occasion but I usually stick to 4-6 seconds. I think you maybe right about the imbalance. I will adjust my technique though, thanks. Belly breathing is great, it has improved many aspects of my life such as work outs, stress reduction and over all energy.