Stand with feet together. Shift weight to right leg. Hold a weight in each hand down by sides. Keeping back flat, core engaged, and shoulders down and back, hinge at hips by sending glutes straight ...

You’ll kick off the workout with a warmup that wakes up your muscles, elevates your heart rate, and activates your single-leg ...

Run faster and more efficiently with these moves.

According to experts, it takes just four core workouts to absolutely rip your top half to shreds, so you can get stronger.

Psst: it's not another plank.

Add Yahoo as a preferred source to see more of our stories on Google. Woman performing plank. If you think that doing hundreds of crunches is going to give you an effective core workout, think again.

You have to engage your core constantly as you sit straight, stand tall, and walk confidently, which requires a lot of endurance in your midsection muscles. The best way to build ab endurance? A core ...

Whether you're preparing for a fitness test, looking to increase your running performance, or simply seeking a challenging and effective way to train, this dynamic workout delivers. By combining ...