Lie on your back on the floor holding a kettlebell in each hand with elbows bent and resting on the ground. Keep your core engaged and feet planted. Press one kettlebell upward until your arm is fully extended while keeping the other arm in the starting position. Lower it back down under control, then repeat with the opposite arm. Continue alternating sides while maintaining stability through your core and avoiding excessive arching of your lower back.
Log your kettlebell alternating press on floor sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.