Body weight exercises are a great way to move your body efficiently and effectively without risking injury from extra resistance or equipment. This is a great exercise to add in as a warm-up, working set, or a great way to burn out your triceps at the end of a workout.
Start sitting on a bench or ledge. Place your hands next to your hips, then lift your tuckus off the surface. With your legs bent or straight, slowly lower yourself down to stretch your triceps. When you feel a full stretch, squeeze your triceps to move back to the starting position.