The Holy Grail of cardiology?

Abstract

I had been training for the last few months, getting up not long after 05.00 h to travel to my local gym to be in the pool for a 1 h swim training session at 06.00 h, four times a week. A few months earlier, some friends and I had agreed we would swim across Lake Annecy in south-eastern France, south of Geneva. Every August the official swimming event runs, with an option of two races. La Grande Traversée is the one we were opting for; a swim of 2.4 km (Traversée du Lac d'Annecy: https://www.openwaterswimming.com/world-top-100/traversee-du-lac-dannecy/). Training had gone well, and although there were times when I felt rough in the mornings, maybe even a little breathless, I dismissed it, and after each swim I felt fine.