"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." After a year of reestablishing a workout habit and focusing on strength gains, I was eager to see more ...

Stop wasting time on crunches and start training your core to resist movement for maximum power and injury prevention.

Add Yahoo as a preferred source to see more of our stories on Google. "Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." That's why it pays to dedicate ...

After a year of reestablishing a workout habit and focusing on strength gains, I was eager to see more results. That meant visible abs for a milestone anniversary vacation. My virtual trainer on 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 ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Do you want a strong ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." That's why it pays to dedicate focused training time on your core. You can start with these ab exercises ...