Good podcast. On crocodile breathing is there any additional advantage to abdominally breathing into a stability ball for added resistance? Brett taught breathing as an exercise per se, which would essentially require the TA and other abdominal muscles to relax, but how should we breath when we are 1. sprinting, or 2. about to get tackled in football, or 3. about to do a snatch for instance, should we brace up in anticipation?