You don't need hours at the gym with weights or endless sit-ups to strengthen your midsection. Instead, you can build core strength in as little as 10 minutes without even getting down on the floor.

Welcome to a high-energy ab workout that will leave you feeling strong and sculpted. High-intensity interval training (HIIT) is the perfect blend of cardio and strength training. When you focus on ...

Looking for a quick ab workout to fire up your core? This seven-minute intense ab challenge targets your lower abs with no equipment. To find out for myself, I unrolled my yoga mat and gave it a go ...

Challenge your core and cardio skills with this 10-minute HIIT workout led by fitness trainer Natalie White. She's joined by class members Luisa Fonseca and Madisyn Maniff for this high-energy cardio ...

Some types of exercises, like HIIT and strength training, can help you lose more belly fat. Staying in a calorie deficit is ...

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 ...

As much as I love a good set of crunches and sit-ups, there are times when I’d prefer not to have to unroll my yoga mat and lie down on the floor. When I’m traveling, for example, or when there’s just ...

Ashley Joi brings the heat in this fiery abs and booty workout. This 30-minute class consists of four blocks packed with a variety of glute and abdominal exercises. Get your heart rate up as Joi ...

High intensity workouts are a great way to get in some fast exercise. Here’s one to get started with. High intensity workouts are a great way to get in some fast exercise. Here’s one to get started ...

A new study suggests that HIIT workouts may help preserve lean mass in older adults compared to moderate exercise—but changes were small. Here's what to know.