ADRA2A
ADRA2A alpha-2A adrenergic receptor — the molecular target that 1 compounds in the wiki act on.
In one line: A "brake" on fat-burning that yohimbine blocks to unlock stubborn fat.
ADRA2A (the alpha-2A adrenergic receptor) is an odd one: it actually blocks fat release in stubborn areas (lower belly, hips, thighs). Yohimbine works by jamming this brake — so those stubborn fat cells can finally release their fuel, especially during fasted cardio.
That's why yohimbine is used specifically for "stubborn fat" once you're already lean. The catch: blocking this brake also revs up your fight-or-flight system, which can cause anxiety and a racing heart in sensitive people.
Think of it as releasing the parking brake on the fat that won't budge.