Deadbugs are a great exercise to help strengthen the abs and teach a person how to resist arching their back when bringing their arms overhead. Shown above, the core activated deadbug utilizes the power of physics to progress a traditional deadbug. To perform: lie on your back with a kettlebell in one hand. Inhale deeply through the nose and exhale HARD while bringing the opposite arm and same side leg as far apart as possible, without touching the ground. The closer the bell is to the ground, the harder it is!