Weight loss plateaus on keto follow the same physiological mechanism as on any diet: metabolic adaptation (Leibel 1995: −250 kcal/day after 10% loss), NEAT reduction, and the erosion of the initial calorie deficit. Plateau-busting strategies with evidence: recalculating TDEE at current weight, confirming protein adequacy (1.6–2.0g/kg/day), addressing sleep deficit, resistance training for lean mass, and reviewing carbohydrate threshold if ketosis has been lost. Keto-specific 'metabolism booster' supplements have no evidence base.