The sidestroke is usually useful if you want to swim with ease while keeping your head out of the water, that’s why it’s often used as a lifesaving technique.
To master the sidestroke, keep in mind these 4 basic tips:
1- Your starting position: Lie on the side you feel the most comfortable with. Stretch your body, extend your legs and point your toes. You should also stretch your hands and keep them far apart. Keep your head out of the water and angle it towards your hip so you can maintain your balance.
2- Your legs’ movement: A lot of the power comes from there. Your legs should do a scissor kick . Cross them at the hips and slice through the water till they meet in front of you.
3- Your hands’ movement: You should move your hands so as to make them meet. Imagine that you are reaching for something with your front hand and then giving it to your back hand, then your back hand throws it backwards.
4- Synchronization of the arms and legs: Your legs should snap at the same time when your hands are meeting; let yourself glide at the end of each stroke.
Here’s a video to give you a visual example:by