How to Master Flutter Kicks (Plus 3 Variations to Switch Up Your Core Workouts) | Runner’s World, May 2021

It only takes a few seconds of flutter kicks to set your abs—especially the hard-to-target lower abdominal wall—on fire. But the benefits of flutter kicks go beyond the core, explains Kara Miklaus, trainer and owner of WORK in Irvine, California. “Flutter kicks also work your glutes, hip flexors, and quads,” she says. “Working all these muscles is an integral part of any cross-training plan for runners to help strengthen all the muscles needed for a powerful stride.” Read the full article on runnersworld.com.