We don't all sweat the same amount during the same exercise.. Crucially, the concentration of sodium in our sweat varies considerably...

So once you have mentally committed to doing 70.3miles in one go, how do you go about doing it? 1. write a plan 2. personalise the plan...

I was prepared for my training to be affected by cold weather, injury, holidays & illness. I hadn't foreseen bike accidents, snow