While I was doing my swim workout today (Quick side note - I did a swim, then a bike - can we call that a "swike?") in the midst of my intervals, I noticed that my obliques were really working hard. Add to that - I was swimming PR times. It seemed I figured out how to engage my core muscles to pull with. Felt like it was something very good - curious which lead to which. Did my position lead to good pulling technique - or was I just pulling harder and feeling it?