Xert 5MMP

Xert 5MMP – Can I REALLY Achieve A Breakthrough? I’m just nine days out from my Peak date per Xert. My Xert 5MMP is reading “355”, and it floats between 355 and 357. I rode some 5 minute intervals yesterday and barely broke 302! The Vo2 data is showing that 355 will be a true […]