[ycombinete]

I went snorkelling for the first time, in Mauritius. Flat water, no fear to speak of. But I was breathing incorrectly through the snorkel. Which one does the first time they snorkel. Overly deep, heavy breaths. Suddenly my heart was racing, and I went into a panic. It felt like I couldn’t breath at all. I started hyperventilating, breathed in some water, and started to get tetany which of course made everything worse.

This was all brought on by my breathing wrong. Not out of stress. Simply because the snorkel messed with my normal rhythm, and caused accidental hyperventilation.