"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." Today's ab routines are more versatile than ever. Sure, you can slog through sets of situps and ...

This month in the Lifehacker Fitness Challenge we are taking on the ab wheel, aka ab roller, aka “crap, I fell on my face again.” Last week we did a plank on the wheel, but today we’re going to use it ...

Ready for the first fitness challenge of 2020? We’re going to get acquainted with the infamous ab wheel, better known as “Hey, what’s this? I bet I can—oof.” (And here you fall on your face.) We’ll ...

A toddler decided to do some exercise in the middle of the night. Her mother said the kid watched her father doing exercise often before, so she knew how to use the equipment. Knees on yoga pad, both ...