The chair triceps dip is an exercise that targets the triceps. It is performed by sitting on the edge of a chair with your feet flat on the floor and your arms extended behind you, holding onto the edges of the chair. You then bend your elbows and lower your body until your arms are at a 90-degree angle, then push yourself back up to the starting position. This exercise can be performed for multiple sets of repetitions, and the weight can be increased by using a weighted vest or backpack.