What does it mean when your lungs give out before anything? My legs were suffering, but not real bad and my heart rate never deviated more than 15bms or so my entire ride even on my 1000 climb. Only went from 155 to 169 during the climb even though I was pushing pretty hard. My lungs seemed to be what is holding me back. I suffered from exercise enduvced asthama as a kid. I've always felt that my breathing technique is perhaps at fault for keeping my performance lower than I want.
Do I just have small lungs or do I need to learn how to breath? Are there breathing techniques other than Yoga type exercises?