Green lemons are commonly picked when underripe. The rind of these, however, will change from green to yellow when they ripen when left on the trees. Increase your stamina and boost your immunity by consuming fresh lemon in any way you like. Drinking lemon juice on empty stomach will help in reducing weight and also gives relief from hypertension, stress and anxiety. This vegetable has a great demand in market for its high nutrients and various health benefits. It is rich in vitamin C, B-complex vitamins, calcium, iron, magnesium, potassium and fiber that is beneficial for the body.