Use the 6-beat kick to stabilize your lower body.

It makes your swim resistant to a swell or a current.

Constantly moving your legs helps to avoid cramps and maintain body temperature.

The basic concept of the 6-beat kick involves movement of knees.

First practice kicking with both legs together, and then kicking separately.

Finally add movement of the arms.

Work towards a compact kick that helps you swim for a long time.