Lie back on an incline bench set at about 30–45°. Grip a barbell with an overhand grip and extend your arms straight above your head. Keeping your upper arms stationary, slowly lower the barbell toward your forehead by bending at the elbows, then press it back up by extending your elbows and engaging the triceps throughout the movement.
Log your barbell incline triceps extension skull crusher sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.