Aleks Fidurski on Instagram: "Estrogen is commonly framed as the “female hormone,” but biologically it functions more accurately as a stress and excitation hormone in both men and women. Healthy reproductive hormones are testosterone in men and progesterone in women; and both depend on energy, thyroid function, and low chronic stress. Under stress, the body doesn’t simply “lose” testosterone. Instead, testosterone is converted into estrogen through increased activity of the enzyme aromatase. Str

Progesterone Levels in Early Pregnancy: Twins » TwinStuff

Canine Pregnancy Calculator: Pin Down Your Dog's Due Date | LoveToKnow Pets

What to expect when your dog’s expecting: A dog pregnancy guide