Tips to Correctly Use the Freestyle Stroke
When swimming the front crawl or otherwise the freestyle, you need to be aware of the position of your body and the use of your arms. There is a correct method of putting your arms into use to pull your self through the water.
You want to keep your body in a straight line that would run down the center from your neck through the chest. This would be the line of pivot for your upper body. That line should be pointing to where you are swimming.
You must keep your hands flat with fingers toget

tips to correctly use the freestyle stroke
When you bring the hand out of the water, do so just enough to clear the finger tips of the surface of the water and move the hand forward just above the surface. Reach out with your arm and again enter finger tips first. Of co
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urse you would be alternating each arm in this manner.
You should be rotating your shoulders as you stroke, just enough to be natural or just for the shoulder to clear the water. There was a time when it was taught to keep the shoulders flat in the water until the Australians dominated one Olympics by swimming with rotating shoulders. After that everyone started the shoulder rotation.