The bottoms-up kettlebell press is an upper-body exercise that people find the most challenging for strength and stability.
This underrated move strengthens your shoulders and challenges your core even more than a standard overhead press ...
Stand with your feet hip-width apart and a slight bend in your knees, with two kettlebells on the floor in front of you.
"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." No offense to sit-ups, planks, and hollow holds, but basic core exercises can feel drab day after day.