Extra intense nausea & a full 5 - 15 mins vomiting from riding hard?

[AJS914]

Recent topic:

Is nausea the true sign of your limit?

When you are well trained and also have learn to push hard I’ve noticed that is not the legs or the breathing, but the nausea that makes you reduce the pace. I’m talking long vo2 efforts in the 6-10m range. Do others experience the same? What is the physiological mechanism? Does it improve with better warming up? Cheers For the sake of keeping the discussion focused, let’s assume nutrition, sleep, hydration and general health are on point.