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Sit on the edge of your sofa. Place your hands on the edge of the sofa on either outside of your hips with your fingers facing forward. Then lift your bum so it is slightly in front of the edge of the sofa. This is your starting position.
Bend at your shoulders and elbows and bring your bum toward the floor. Don't let your shoulders go lower than your elbows. Then use your triceps to straighten your arms so that you return to the starting position. Do 15 dips.