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

A strong woman holding a kettlebell.

I’m a marathon runner and a fitness editor, so I know that, when it comes to getting across the finish line, a strong core is as important as strong legs. I’ve already shared my go-to exercise for building a rock-solid core, but one exercise I prioritize when I really want to blast my abs, hip flexors, and shoulders, is the standing overhead march. Read on to find out more, plus the variations to try once you’ve mastered the move.

As a reminder, if you’re new to exercise, you’re returning to exercise following an injury or you’re pregnant or recently postpartum, it’s always best to seek personalized advice from a qualified professional.