This is Your Quick Training Tip, a chance to learn how to work smarter in just a few moments so you can get right to your workout. If you’re a fan of leg day, you’re familiar with the leg curl machine ...

Sana Shirvani trained the cast of the live-action remake of "The Little Mermaid." She shared how she trained Ariel actress Halle Bailey for one week exclusively with Insider. Bailey focused on ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A glute-hamstring developer, commonly known as a GHD machine, is a large, specialized piece of equipment ...

Back extensions, hyperextensions, Roman chair extensions — whatever you want to call them, this back exercise is brilliant at strengthening the muscles along the back of your body, known as the ...

To play Ariel in "The Little Mermaid," Halle Bailey had to get as strong as possible. She needed a strong core to film scenes with a rig around her waist, her trainer told Insider. Bailey had to ...