u/GreatBear2121

Not in the sense of which discipline is most important in a triathlon (that's the cycle), but which of the disciplines do you think helps you best cross train for the others? In one sense, aerobic fitness in aerobic fitness, but on the other, I often wonder if my swim sessions are having any tangible impact on my run or bike, or if I'm just improving swim-specific fitness, and vice versa.