Absolutely Everything You Need to Know About Planks

Side planks can be done on your elbow or palm, though doing them on your elbow makes it much easier to balance. If needed, you can also perform side planks on your knees.

• Lie on your right side on the floor. Prop yourself up on your forearm, making sure your elbow is right below your shoulder. With your legs fully extended, stack your left foot on top of your right.
• Press into your right foot and elbow to lift your hips up into a side plank, forming a straight line from head to heels. Keep your neck long, and make sure your hips are stacked; don't allow your hips to tilt forward or backward.
• Hold this position for 15-60 seconds. Repeat on the other side.