Add Yahoo as a preferred source to see more of our stories on Google. Certified trainer Jenna de Léon leads you through a 7-minute deep core workout circuit that uses a single dumbbell. Use it as a ...

Introducing your new go-to abs routine. This seven-minute workout can be done every day to strengthen one of the most important muscle groups in your body: the core. Trainer Jenna de León takes you ...

Confession: Despite my lengthy career as a fitness journalist and being well-versed in the health benefits of a strong core, I have not been consistent with training my abs for a while. (Hi, holidays ...

Abs are often an afterthought, tacked onto the end of your workout as a few basic sit-ups. But like any muscle group, to achieve strength and definition, you’ve got to step things up to avoid the ...

Confession: Despite my lengthy career as a fitness journalist and being well-versed in the health benefits of a strong core, I have not been consistent with training my abs for a while. (Hi, holidays ...