Fitspo! Sofia Richie modeled a few workout outfits on her Instagram Story on March 28 but it was hard to notice the clothes when her rock-hard abs were stealing the show. The model obviously works ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." I love working out, and a good workout challenge is even better. When I had the opportunity to try model ...

I just interviewed Victoria's Secret Angel Josephine Skriver and she told me her TOP move for flat abs -- something we'll all want after watching the Victoria's Secret Fashion Show on Nov. 28!

Gale started with crunches to strengthen her core. She then opted for arm and leg raises to further the burn. Gale also relied on knee-to-elbow crunches and twists. Her workout buddy relaxed and ...

Sports Illustrated swimsuit model Leticia “Tish” Martinez flaunted her enviable six-pack in ab-baring workout gear, even on her “rest day.” The trainer and bikini model is a bona fide fitness and ...

The fun thing about ab workouts is that there's so much you can do to challenge and strengthen your core with zero equipment necessary. Take this 10-minute workout shared by Swedish Australian ...

What can I say? I love the feeling of strengthening my muscles on a Megaformer machine, working them in 50 minutes worth of planks and lunges until my core, legs, and butt are shaking. It’s the only ...