Sit on the ground with your upper back against a bench or sturdy surface.
Place a weighted object over your hips and extend one leg with your foot flat on the ground.
Push through your heel of the grounded foot and lift your hips towards the ceiling until your body forms a straight line from your shoulders to your knees.
Hold the position at the top for a second or two before lowering back down.
Repeat for the desired number of repetitions, then switch legs.
Common Mistakes
Overarching the lower back during the thrust.
Not fully extending the hip at the top of the movement.
Allowing the supporting foot to come off the ground.
Modifications
Use a lighter weight to start.
Perform the exercise without weights to master the form.
Tips
Make sure your shoulders are resting on a stable surface.
Engage your core throughout the movement.
Use a weight that challenges you but allows for proper form.