I love reading ProblemSolver's tales of extreme zoning, there's something poetic about them.

Congrats on the new W.R dude, and the tribute to Marcus is a touch of class.

While my efforts pale into insignificance, I've recently been trying to beat my P.B on Syncopia - currently around 290,000, and something quite worrying has been happening... when I get to really high speeds (in the 90s) I realise I'm not breathing properly. Adrenaline's coursing through my veins, my blood pressure's through the roof and I'm suddenly aware I've been holding my breath! Worse still, even though I know I'm doing it I can't stop and my breathing comes in fits and bursts until I feel quite feint

Has anyone else experienced this frightening phenomenon?