• Why do people eat sugar and gain weight?

    Why do people eat sugar and gain weight?
    Fat-eating rats will gain weight like humans, but not eating sugar will not gain weight. Scientists will reveal the reason for us.
  • Why are limbs cold in winter?

    Why are limbs cold in winter?
    Many people are afraid of the winter because the cold weather makes their limbs cold and uncomfortable. The cause of this phenomenon may be because you are iron deficient.