No sit-ups or planks — I used this simple standing ab exercise to boost my core strength and work on my hip stability

Credit: Shutterstock I’m a marathon runner and a fitness editor, so I know that, when it comes to getting across the finish ...

I’m a Trainer and These 5 Standing Exercises Target Core Strength After 50

Standing core exercises after 50: a certified trainer shares 5 moves with form cues to build stability and protect your back.