Mixed longitudinal data on the physical changes at puberty in 228 normal boys are presented together with normal standards for stages of genital and pubic hair development. The genitalia began to ...
Young dogs are often bursting with energy, and their exuberance can manifest through jumping and pulling forcefully on walks. Their sudden sprint forward may be a way of releasing pent-up energy ...
New research from the University of Liverpool illustrates how accelerated reproductive ageing in females (e.g. early puberty or early menopause) is linked to experiences of mental health challenges.