Originally Posted by
Ygduf
real answer: do 1 min efforts at 100% and get used to feeling like you're dying. step up both mental game and train what you want to improve.
For me, I think it's a lot of this and what MDCAT said. Need to learn to push harder, and also push harder while being tired. Did 1 minute efforts last night until I cracked, saw heart rates I never see, even when racing so I'm on my way.