The 13 Best Abs Exercises You Can Do Standing Up

7. Side crunches while standing

• Feet slightly wider than hip-width apart, dumbbells in each hand, arms in a ball catcher position. 
• Tighten your core muscles and bring your left elbow to your left hip, bending at the waist and performing a side crunch. 
• Instead of moving down the elbow, try to keep your arms and shoulders level and use the obliques to move your torso. 
• Perform on the left side for 60 seconds, and then the same amount on the right. 
• Then alternately on both sides for 60 seconds.