Importance of posture during meditation?
Recently I performed my first attempt at Buddhist meditation (metta bhavada, to be specific.)
The experience was wonderful -- much more calming and pleasureable than I had originally anticipated. During the meditation I felt a significant sense of happiness and peace, and by the time I had finished I felt very much like I wish I could feel everyday. The meditation certainly worked for me, but later I did a bit more studying on meditative posture and discovered that mine wasn't completely proper, seeing as how I was slightly leaned back in my chair as opposed to being upright with my chest out and shoulders back.
However, sitting in proper medatative posture is strenuous for my lower back, and I believe the discomfort would distract me from concentrating. Is sitting with proper posture really that important, or is it more important that I be comfortable so as to concentrate better? Am I losing out on something when I fail to use proper posture?