How to do Kettlebell windmills
Begin standing with the feet out wide (wider than hip width apart) and toes turned out. Hold one kettlebell in your hand overhead with the arm straight. The other arm can be resting at your side.
Look upward at the kettlebell to focus on keeping the arm straight and the kettlebell as still as possible throughout the duration of the exercise.
Put weight into the heel of the same side leg as the kettlebell. Then push the hips out toward that same side as you reach with the free hand toward it’s same side foot (or the floor next to it). Your torso will now be almost perpendicular to the ground depending on how mobile you are. Keep both legs straight and the kettlebell directly overhead still.
Once you feel a stretch in the hamstrings, reverse the motion as you return the torso upright and weight equal between both legs.
Repeat for the desired repetitions on both sides.