Ask any triathlete, and they’ll agree: one of the most stress-inducing aspects of a race is the first five minutes. Because of a rolling start or cold conditions, sometimes the first time you get wet gives you just minutes before the mass start or wave start. You jump into the water, and it’s GO GO GO from the start; the heart rate spikes, and that can be daunting. It begs the question: how do you get warmed up for that zero-to-full-speed race start, so you’re ready for the spike in muscle bu...