The 13 Best Abs Exercises You Can Do Standing Up

11. Lateral leg lift

• Feet hip-width apart, in hands – dumbbells. 
• Tighten your core muscles, bend to the right at the waist, and at the same time lift your right leg off the floor, keeping your arm and leg straight. 
• Tighten the obliques as in a crunch. 
• When the leg comes back down, immediately start the second lift without transferring your body weight to your right leg. 
• Perform on the right side for 60 seconds, then do the same to the left. 
• Then alternately on both sides for 60 seconds.