Slide your bottom off the bench or chair, keeping your legs extended out in front of you.
Slowly lower your body by bending your elbows until they're at about a 90-degree angle, keeping your back close to the bench.
After holding this position for a moment, push your body back up using your arms until they are fully extended, but not locked.
Repeat this process for your desired number of repetitions, ensuring to keep your core engaged and your body close to the bench throughout the exercise.