SEATED OVERHEAD DUMBBELL TRICEPS EXTENSION

Starting position

1. Sit on a bench and straighten your arms overhead, perpendicular to the ground, while holding a barbell with your hands.
2. Straighten your back, activate your abdominal presser and tighten your gluteal muscle to stabilise your posture.

Implementation

1. Inhale while maintaining the correct starting position, keep your arms stationary, elbows close to your head, and slowly lower the barbell behind your head until you feel strong stretch in your triceps.
2. Hold the movement at the lowest point for a moment, and next straighten your arms and lift the dumbbell. 
3. Return to the starting position in the final phase of the movement exhale.
4. Tighten the triceps firmly at the point of full extension.
5. Repeat the exercise a set number of times.