Can you explain the technique for sidestroke kick?
To execute the sidestroke kick:
Lie on your side in the water, with one arm extended forward and the other placed at your side.
Bend your top leg at the knee and bring it upward until your thigh is perpendicular to the water's surface.
Extend your bottom leg straight downward as you simultaneously straighten your top leg.
Snap your legs together while scissor-like motion, then repeat with the other leg.