The abs workout this trainer is using to prep for summer is only four moves, and there's not a sit-up in sight

Woman performing bicycle crunch exercise.

Summer is coming, and that might mean you're tempted to add more abs work to your daily movement. And why not? The abs are part of your core and there are many benefits to a stronger core, such as improved posture and reduced lower-back pain.

If you're searching for moves to try, check out this four-move bodyweight routine from personal trainer Julia Morgan which she's using to prepare for summer.