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 ...
Work everything from shoulder and back muscles to arms and the core ...
"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.