To АлександрД
You can be right, if he has short breath strikes…but WeRtheOcean wrote :
1) « …I unconsciously breathe harder »
2) « I don't really like the slowly increasing headache, and I worry that dizziness might come next »
- If headache Ok —> hypercapnia
- if dizziness is one of the sign provoked by hyperventilation.
For that reason I proposed (like you) a simplified relaxing breath method.
Question : does "WeRtheOcean" confuse headache with dizziness ?
Does he express correctly what He do feel ?
So like « Zef « said
"Tell us a little more about you: Height, weight, overall health, amount of exercise you routinely do, overall comfort level in the water….It is difficult to make any further recommendation as you have not provided enough information about you and what you are experiencing for anyone to properly asses what is going on "
You wrote :
« … as I read and heard from many freedivers (incl. speargunners) - not more than 3 cycles. 5 could be too risky »
I agree totally with you.
The relaxing methods, is to be practiced before you enter in the water or before an "static" in swim pool.
I followed this method taught by an instructor of "Apnea Academy" ... founded by champion Pelizzari
Here is the complete relaxation method that I simplified a bit.
First we must practice the abdominal ventilation, watch this video
=>
We inhale for 3s (or 4s) and exhale (twice the time), 6s (or 8s).
a) 5 cycles : inhale and exhale as above
b) 4 cycles : inhale 3s, apnea 3s and exhale in 6s
c) 3 cycles : inhale 3s, apnea 3s, exhale in 6s, apnea 3s.
d) breathe normally
4) in the water before the « duck dive » 3 deep cycles In, Out.
Remarks : extract from AIDA cours.
After a ventilation, don’t dive if you fill one of the following symptoms.
Euphoria, tingling in the extremities, light headedness, dizziness, numbness around the mouth, a metallic taste in the mouth, semi paralysis of the hands.
It's hyperventilation ... breathe normally and do not dive until symptoms are gone.
So we are waiting for the answer more WeRtheOcean’s details.