Today I mastered RC PE6 after bearing in mind recent posts about how we don't train hard enough...
Towards the end of the last set I developed a headache which then lasted about 3-5mins. I was breathing normally (i.e not holding my breath or fast breathing etc) and focused on gripping the bar for dear life. I shut my eyes to ignore the countdown and I think actually went beyond 60s in the last two sets because of this.
What did I do wrong to cause a headache? How I can I avoid it next time? Thank you for any tips.