Sit on a bench with back support and position a barbell at shoulder height. Grip the bar slightly wider than shoulder-width with palms facing forward. Unrack the bar and hold it at your upper chest while keeping your core tight and back neutral. Press the bar upward in a straight line until your arms are fully extended overhead, then slowly lower it back to shoulder level with control. Keep your elbows slightly in front of the bar and avoid arching your lower back.
Log your barbell seated overhead press sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.