Then what you need is an elevator! Problem solved. Well, not quite. That weak feeling is the muscle-organ link between certain areas of your digestive tract and your quadriceps muscles (thighs), hence the weak feeling in the legs and/or knees, or even the knee pain you may get especially while squatting or sitting down. Food allergies, a diet high in carbohydrates (especially simple sugars), and hydrogenated “trans” fats are the major culprits with weak legs.
/ / / My legs feel weak walking up stairs