Hey guys,
So I'm not doing actual freediving. I am getting ready to join the military, and in my future job I will have to be able to swim 25m underwater on intervals. The issue is that I get MAJOR headaches sometimes. Not every underwater gives me a headache. Once, I did 1 underwater, felt very easy and comfortable the entire way, and as soon as I came up and took my first breath of fresh air I felt like my head exploded. I wound up sitting in the locker room for ~45minutes till I was able to drive, and went home and passed out. That headache lasted 4 or 5 days. Other times I've been able to complete 6 or 7 before my head starts pounding. There is never any indication that I have a headache coming until I come up and take that first breath, and then it is very sudden and violent. I believe they are triggered by excess CO2 in the blood but I am open to suggestions.
My questions are, will I build up a resistance to CO2 over time and not get these? I do O2 and CO2 tables regularly with no issues, and have a dry static hold max of 4:30, all with no sign of a headache. Is there anything I can do to combat/prevent these? I've considered releasing air throughout the swim in hopes that I will be lowering my CO2 levels in doing so. Do you think this makes sense?
Any help, or even just keywords that I can use to research myself would be a great help.
So I'm not doing actual freediving. I am getting ready to join the military, and in my future job I will have to be able to swim 25m underwater on intervals. The issue is that I get MAJOR headaches sometimes. Not every underwater gives me a headache. Once, I did 1 underwater, felt very easy and comfortable the entire way, and as soon as I came up and took my first breath of fresh air I felt like my head exploded. I wound up sitting in the locker room for ~45minutes till I was able to drive, and went home and passed out. That headache lasted 4 or 5 days. Other times I've been able to complete 6 or 7 before my head starts pounding. There is never any indication that I have a headache coming until I come up and take that first breath, and then it is very sudden and violent. I believe they are triggered by excess CO2 in the blood but I am open to suggestions.
My questions are, will I build up a resistance to CO2 over time and not get these? I do O2 and CO2 tables regularly with no issues, and have a dry static hold max of 4:30, all with no sign of a headache. Is there anything I can do to combat/prevent these? I've considered releasing air throughout the swim in hopes that I will be lowering my CO2 levels in doing so. Do you think this makes sense?
Any help, or even just keywords that I can use to research myself would be a great help.