1
Lie flat on your back on a mat or floor with legs extended. Head and shoulders remain relaxed on the ground. Place hands behind head or across chest for support.
2
Keep one leg straight and extended on the ground for stability. Engage core muscles and prepare to lift the opposite leg.
3
Slowly lower the working leg toward the ground in a controlled manner without touching down. Maintain a slight bend in the knee and keep the leg extended. This lengthens the quadriceps and requires eccentric control.
4
Drive through the quadriceps to lift the working leg back up to the starting position, raising it to approximately 45-60 degrees. Squeeze the quadriceps at the top position before lowering again.