Simulating high-altitude training
Today as I was riding I tried to breath only through my nose, I wasn't really pushing it, probably around 16-18 mph but I couldn't maintain it. I felt as soon as I exhaled I needed to inhale after a few cycles of these in and out breaths I felt like I was going to hyperventilate.
So I was wondering if this (breathing only through the nose) would be a way to simulate training at altitude?