We get it: You don’t always want to do crunches or planks or even use gym equipment to work your abs. Luckily, you don’t have to. If you’ve never thought about working your core while standing, you should. It may even be more effective because your core musclesaren’t just the ones you see in the mirror: They wrap all the way around your body—from your “six-pack” abs to your obliques (which hug the sides of your trunk) to the muscles that stabilize and support your spine.

With that in mind, we tapped Rachel Nicks, trainer at Boutique Fitness Xperience, to come up with the best standing abs moves that target your entire core. As you do them, focus on form over reps, Nicks says. For instance, use your abs to lift your leg each time, not your quads or glutes.

How it works: Pick 2 or 3 moves from the list and add them to a cardio or strength routine. Do each move for the designated number of reps or time and do 2 rounds total. The nice thing about abs: It’s hard to overdo them, so feel free to try 2 or 3 moves one day and 2 or 3 different moves the next time you work out.

1. March With Twist

2. Wide Second Side Crunch

3. Standing Stabilization

4. Reverse Chop

5. Standing Side Bends With Dumbbells at Side

6. Standing Side Bends With Dumbbells Overhead

7. Standing Side Crunch

Stand with feet a few inches wider than hip width, a dumbbell in each hand, and arms in goalpost position. Engage core and bring left elbow to left thigh by bending at the waist and performing a side crunch. Rather than moving elbow down, try to keep arms and shoulders in the same place throughout so you’re forced to use obliques to perform the move. Do left side only for 60 seconds, then right side only for 60 seconds. Then alternate sides for 60 seconds.

8. Standing Crossover Toe Touches

9. Single-Leg Sprint

Make it harder: For more of a challenge, add a twist, pulling right knee in to touch left elbow each time.

10. Chair Pose Twist

11. Side Leg Raise With Side Bend

12. Standing Twist

13. Overhead Circles