This module explores the hormonal networks involved in growth, tissue repair, muscle maintenance, and bone health. It covers Growth Hormone, IGF-1, insulin, PTH, vitamin D, calcitonin, and FGF-23, along with their roles in growth, calcium, phosphorus, and mineral regulation. The module highlights the importance of adequate energy, protein, key micronutrients, quality sleep, and resistance or weight-bearing exercise for hormonal function and recovery. It also provides practical nutrition strategies to support bone strength, tissue repair, and overall metabolic health.