I'm always up for a challenge, so I decided to spend 30 days doing flutter kicks, in an attempt to master the exercise and get an even stronger core.

Flutter kicks are an awesome core move to tone your lower abdominals. But you need to do it correctly to get the benefits. Here's how to do flutter kicks.

Core training has always been part of military PT and fitness testing. From crunches to sit-ups, flutter kicks, leg tucks and plank poses, the U.S. military uses many exercises to test core strength.

Hollow holds work the core from all angles for an awesome abs workout. Here are the hollow holds results after three weeks of ...

Shilpa Shetty highlights the benefits of flutter kicks for core strength, muscle endurance, and balance, and recommends using a tennis ball.  ...