Over 45? Hold a forearm plank for 90 seconds with solid form—why it signals elite core strength and how to build up.

If you need a little variety, strength coach Jim "Smitty" Smith, C.P.P.S., owner of Diesel Strength & Conditioning and Men’s Fitness advisory board member, shares his favorite plank variations and ...

Russian twists are a great way to engage both sides of your obliques at once. Sit on the floor with your knees bent and lean ...

Build a stronger core without the floor. This 12-minute standing routine challenges your abs, balance, and posture—perfect ...

How to: Start in a modified pushup position (high or low) with each hand on a slider and knees on the ground. Slide one hand out to the side and lower your chest toward the ground into a pushup. Slide ...

Workouts that include plank variations are incredibly effective for building strength, stability, and endurance. Planks engage your entire core—abs, obliques, and lower back—while also working your ...

Planks are widely considered by fitness experts to be a fantastic exercise to strengthen the muscles in your core and elsewhere, no matter your age or physical fitness level. There are numerous ...

One of the most powerful, yet overlooked, benefits of regular physical training is its capacity to strengthen the mind.

This doesn't mean you're doomed to have brittle bones as you age, but it does mean you have to be proactive if you want to ...

At 85, Erika Rischko held a plank for 9 minutes live on TV. Here’s how she trains, why she loves planks, and her advice for ...