Would agree with the others. This is absolute text book CO2 retention caused either by faulty regulators, over exertion or more commonly poor breathing technique.
Breathing should be slow and deep. In...two...three...four...Out...two..three.four..five... repeat or similar.
It could also be related by trying to overuse the lungs for buoyancy control - i was doing this a lot early on and resulted in the same thing. Lungs are for small fine tuning only not for more than that.
Its worth practicing proper breathing techniques, making sure your weighting and buoyancy is correct (as less effort required to move then) and it should help. Nitrox wont help at all - we're talking CO2 retention here not lack of oxygen.
Its worth noting that as well as headaches CO2 retention can also increase the effects of narcosis, oxygen toxicity and in extreme situations can cause blackouts. Its not healthy and has to be stopped.
Breathing should be slow and deep. In...two...three...four...Out...two..three.four..five... repeat or similar.
It could also be related by trying to overuse the lungs for buoyancy control - i was doing this a lot early on and resulted in the same thing. Lungs are for small fine tuning only not for more than that.
Its worth practicing proper breathing techniques, making sure your weighting and buoyancy is correct (as less effort required to move then) and it should help. Nitrox wont help at all - we're talking CO2 retention here not lack of oxygen.
Its worth noting that as well as headaches CO2 retention can also increase the effects of narcosis, oxygen toxicity and in extreme situations can cause blackouts. Its not healthy and has to be stopped.