Dumbbell triceps extension seated on a stability ball

Extend the elbow while keeping the upper arm as stable as the variation allows. Return slowly and do not let the resistance pull the joint back abruptly. Prioritize control over speed. Maintain useful tension through the range and deliberately reset the starting position before the next repetition.

Do not turn the final repetitions into fast or partial movements. Aim to load abdominals, triceps and lower back without sacrificing position; at intermediate level, progress control first and then add load, repetitions or complexity. On unstable surfaces, master the position with light resistance first; stability should limit difficulty before load does.