Performing the: A Step-by-Step Tutorial Concentration Extension
Place your right elbow on the inside of your right thigh, leaning slightly forward to stabilize your body.
Slowly lift the dumbbell, extending your arm until it is fully straightened, while keeping your elbow and upper arm stationary.
Pause for a moment at the top of the movement, flexing your bicep.
Slowly lower the dumbbell back to the starting position, ensuring you maintain control throughout the movement. Repeat this process for the desired number of repetitions, then switch to the other arm.