Define "overhead stability" in weightlifting.

Overhead stability in weightlifting refers specifically to the ability to control the barbell when it is held overhead. This involves not just maintaining balance and proper alignment of the body, but also ensuring that the barbell remains stable during movements. Effective overhead stability requires coordination, strength, and awareness of body mechanics, enabling the lifter to perform lifts safely and effectively without losing control of the barbell.

In essence, a lifter with good overhead stability can manage various factors such as their center of gravity, shoulder positioning, and overall body posture while the weight is above their head. This is crucial during exercises like the snatch and clean and jerk, where the lifter must not only lift the weight but also secure it overhead in a stable position before attempting to lower it safely.

The other options touch on related concepts but do not accurately define overhead stability. While lifting heavier weights is a goal for many athletes, it does not directly equate to controlling a weight overhead. Core strength during squats is primarily focused on lower body mechanics, and flexibility in the shoulder joint, though important for overall performance, does not encompass the broad spectrum of abilities required for maintaining overhead stability.