Inner thighs that hold your stance together.
Control the negative, don't let your legs snap back open.
The adductor machine isolates the inner thigh muscles that pull the legs together, working them from a stretched open position through a full squeeze with the glutes assisting to stabilise the hips. These muscles do serious unglamorous work in squats, lunges and every change of direction, yet almost nothing else trains them directly. It earns its place because strong adductors keep the knees tracking and the stance solid under heavy lower-body lifting.
No machine spot-reduces fat, that comes down to overall training and diet. What it does do is strengthen and build the inner thigh muscles, which improves how your legs look and perform under a squat.
Open enough to feel a genuine stretch in the inner thighs, but never forced. Start conservative, work the full range under control, and widen the setting over the weeks as the stretch becomes comfortable.
The lengthening half of the rep is where much of the growth stimulus lives, and where the adductors are most vulnerable to a sudden yank. Fight the pads all the way open instead of letting the stack snap your legs apart.
