Maca, because it contains unique bioactive components, macadamide and macaroni, can effectively improve male physical strength and fertility, and is praised as a natural hormone engine by American scientists. The human cycle is 28 days. Generally speaking, taking Maca for 2-4 weeks will have obvious effect, considering the influence of different personal physique and other factors. After eating maca, the energy, immunity and sexual satisfaction are enhanced, and the whole person is full of vitality. I bought Tiheng Jianmaka.