HOW: Grab the desired medball weight and lift it above your head with both hands. To initiate the throw, squeeze your core and think of moving your ribcage down and closer to your hips. At the same time as doing this, forcibly throw the ball to the ground.
FEEL: You should aim to feel your stomach muscles doing the majority of the work to throw the ball.
COMPENSATION: It's easy to try to throw the ball super hard with your arms, try to resist that urge! Really use your stomach muscles to "crunch" the ball downwards and towards the floor while also throwing the ball down with your arms.