How to do windshield wipers: lie on your back with legs raised at 90 degrees, lower them side to side without touching the ground. If your back hurts, bend your knees and do the same motion.
Jeffrey Jaime, CISSP.
April 22, 2017.
These are the windshield wipers. So you can lay on your back, arms to the side, legs in a 90 degree angle. You're going to go down to one side and then pull. Go to the other, pull.
If this gives you some back pain or it's too hard, you can just bend your knees and do it. Try to bend at 90 degrees.
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