My favorite sport is swimming. Swimming is a very tough sport that requires a lot of strength.
In swimming, there are four different strokes: butterfly, backstroke, breastroke, and freestyle.
In my opinion, butterfly is the hardest stroke for me because you have to lift your whole upper body
out of the water while moving your legs up and down. My personal favorite stroke is breastroke because
it is a very calming stroke. There is no white water or rush. Also, swimming is very good for the body
because it works every muscle and releases a protein called BDNF(Brain-Derived Neurotrophic Factor).
