 Having low dietary energy from excessive exercise and/or dietary restrictions leaves too little energy for the body to carry out normal functions such as maintaining a regular menstrual cycle or healthy bone density.Amenorrhea, defined as the cessation of a woman’s menstrual cycle for more than three months, is the second disorder in the Triad.Weight fluctuations from dietary restrictions and/or excessive exercise affect the hypothalamus’s output of gonadotropic hormones.