Plus, easy variations to make them more or less challenging. Leg lifts are effective for targeting the lower abs and can improve core strength and stability without traditional crunches or planks.

Most gym goers know that it’s important to train your core, a set of mid-body muscles that play a role in nearly all of your everyday movements. However, not everyone knows that these muscles can be ...

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.