Yohimbine is a potent alpha-2 adrenergic antagonist. Antagonizing (or blocking) these receptors enhances lipolysis in areas that are otherwise resistant to fat loss. In other words, yohimbine decreases fat mass specifically in those stubborn areas that are dense with A2 receptors.
Basically, yohimbine works by preventing the alpha-2 adrenoreceptors from inhibiting or blunting lipolysis while inducing the release of norepinephrine and therefore, lipolysis.
What's awesome about alpha-2 receptors is they're predominantly found in the lower body, abdominal area, and the lower back. This is huge! It means that yohimbine attacks fat specifically in these relentlessly stubborn areas!