When training in the swimmingpool yesterday I force the last apnea and then I got a headache, after that I leave the training. But today when I try to force a little the dynamic apnea, the headache came again
any Idea?, I have read that this could be because of hypoxia, alpinists suffer this when they are over 2500mts.
any solution to avoid it (and I mean not to leave before hypoxia :-D), today I was with only one diafragmatic contraction.
thanks in advance and sorry for my english
