How to Increase your Breath Hold for Spearfishing – TRAILER Two

How to Increase your Breath Hold for Spearfishing – TRAILER Two

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How to increase your breath hold for
spearfishing, there’s a lot of information to cover in this episode and
a lot of it’s very important to know particularly. It makes sense to think
that a lack of oxygen in the bloodstream would drive our urge to breathe but in
fact the majority of the receptors in the respiratory center and the human
brain ignore oxygen levels and react to carbon dioxide levels in the blood
now this practice of over breathing it cheats our body and pushes out the urge
to breathe, so that brings us far closer to running out of available oxygen. The diver
may sink back towards the bottom and suffer barotrauma or burst eardrums from
not being able to equalize while sinking a diver that is not assisted back to
the surface in time may end up with brain damage or will not survive the
blackout, so the clip that you’re watching now is obviously a real
dramatic bit of black out footage and it sort of hits home the
danger of blackout quite well and the diver in the clip. Now I need to
highlight that prevention of shallow water blackout is by far the most
effective tool against it and this is how we gear our approach to free diving
to hunt fish. So this allows you to look at the watch and see the dive time
versus the surface interval time so you can spend the right amount of time on
the surface before making your next dive now the reason why it is advised to
spend at least double. So blood shift happens when the body limits blood flow
to the muscle skin and other tissues that are tolerant to low levels of
oxygen to conserve oxygen for the heart lungs and brain, now splenic contraction
is a response to low levels of oxygen and high levels of carbon dioxide now
what it does is causes the spleen to release red blood cells increasing the
oxygen capacity of the blood. Now the good thing about the mammalian dive
reflex is that the majority of things that we do while spearfishing. Our goal
with these techniques is to reduce the amount of oxygen that we’re burning not
only on the descent and during the hunt but also on the surface prior to the
dive, active and even tense muscles are an oxygen leech but an active brain
burns a large amount of oxygen as well. Incredibly useful for relaxing your
muscles and brain prior to diving so the principle of this technique being that
when you’re on the surface about to dive there’s no real way to gauge how tense
you are. Finish off the rest of the inhale and
then dive now it just takes a little bit of practice and you’ll see this working
so basically I’ll do one now. Now the ear canal that we typically clean wax from
is sealed from the inner ear cavity by the ear drum unless the ear drum is
broken now as we descend in the water the pressure increases causing the drum
to flex inward which is uncomfortable and left long enough while continuing to
dive without equalizing will damage the ear drum. Now this is where the
eustachian tubes come in. Particularly if you see fish like snapper or something
like that and maybe in shallow over a ledge and you know you have to break
that water surface without making too much commotion and bubbles and things
like that so the more effect of your duck dive is you know and easier that you
can break the surface of the water and slip down into the water, the
better it’s going to be for hunting so the techniques basically you know you do
your relaxation technique so the one that I’ve taught obviously the rate yourself relaxation technique and you do your. Then I snap out of this mode at the
bottom and begin to hunt knowing that I’ve done my best to lessen the oxygen
used to make it down to the fish’s habitat now we obviously also have to
keep a posture in mind when it comes to ascending from the bottom and surfacing
and we want. An interesting side effect of the mammalian dive reflex is that the
blood shifting to the core of the body causes the kidneys to produce more urine
the body assumes that it has too many fluids
when in fact this isn’t the case. It is said by freedivers that a loss of 1% of total fluid volume can reduce your free diving performance by around
10%. Now hook breaths are a type of breath typically used by fighter pilots that
are exposed to high g-force maneuvers that drain blood away from the brain. Now
they’re important in freediving as they saturate the blood with oxygen at a
far more efficient rate. By doing this the body is being placed in an
environment for a period of time where it is dealing with higher levels of carbon
dioxide in the bloodstream. So by training in this zone we’re creating
tolerance to co2 and this is really the foundation for
comfortable underwater hunting. Which can be an issue for spear fishing
particularly when our body is running low on electrolytes it is said to aid in
muscle relaxation and can also help with hiding anxiety levels now generally
these vitamins and minerals will be fine

5 thoughts on “How to Increase your Breath Hold for Spearfishing – TRAILER Two”

  1. Stop cutting out the stuff you say. I'm trying to understand what you are saying but it is hard when you cut out every word you say.

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