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One test that is required taking by Navy Seals is the 50 meter underwater swimming Test. This my friend is really difficult to do. One question that comes up in my mind is why would you want to do this? Well its very impressive if you can do this in front of some friend. However there are many ways which can get you to the level of swimming.
Just how far is 50 meters, well about 164 feet. Its about half a football field.
1. Practice Holding your breath out of the water
In order to combat the need to breath just after you start hold your breather your going to have to practice.
Take a massive gulp of air and hold it. Don't breathe ; fill your lung capacity to 80-85% so that you still have room to relax.
Don't hold air in your cheeks.
Hold for as long as you can
Do this several times a day
You will eventually build your lung strength to were you will be able to hold your breathe for double as when you first started.
Holding breath technique
Hold breath for 2 minutes (or as long as you can)
Hyperventilate for 30 seconds
Hold breath for 1 minutes
Hyperventilate 30
Hold breath for 2 minute
2.Remember to Relax
Remain as calm as possible the entire time you are underwater. The more relaxed you are, the less oxygen your body will waste.
This can be accomplished by taking your time and gliding through the water. The number reason for loss of oxygen is the struggle to finish.
3.Technique
The best thing I have found for getting the maximum distance and bang for my buck when swimming long distances under water would be the long- smooth breast stroke with the dolphin kick.
Breast stroke is when you start off by pushing at your normal depth for Breaststroke Pull Out and hold on to a tight streamline position.
-Then you turn our palms out to begin the out-sweep
-After that as your hands separate and prepare for a powerful pull, allow the legs to float up just a bit
-Then as you continue your out-sweep, continue to let your legs elevate to prepare for a heavy downward movement. The higher you raise your legs, the more range of motion and power you have for the downward kick
-Hook your hands so that you can get the maximum leverage and a powerful pull.-Your hands hook in at the
-point that will give you maximum leverage for a strong, quick, and powerful pull.-Anchor your hands against
-the water to help you slam your legs down in a fly motion.
4.Build Up to 50 Meters
Last But not least its important to build up to 50 meter. trying to go for that distance off the bat can be very dangerous. I started withe 25 meter then worked my way up by 5. For example 20 then 25 then 30 and so on. Unless your already a professional swimmer, that would be the best way to start.
Hyperventilation can be good for practicing, however should never be used for long distances. That can be dangerous.
Extra
Controlled hyperventilation
Controlled hyperventilation is done to increase the time one may hold their breath underwater. If it is done in excess it can be very dangerous. First your breathe in and out really fast. Never do it more than 4 times before going under water.
In the case of controlled hyperventilation, every bit of air that can be exhaled is released from the lungs. This lowers the carbon dioxide (CO2) in the blood stream. Then a deep breath is taken. This raises the oxygen in the blood. If this is done enough a person will be able to hold their breath for a much longer time.
