In this training we will focus on deepening our understanding of the events that relate obesity, understood as a chronic disease based on adiposity and not with a defined anthropometric value, to two of the cancers related to sex steroids, namely breast and prostate cancer. As the dysfunction of skeletal muscle and bone tissue form a triad together with lipoinflammation that we know as osteosarcopenic obesity, which forces us to reconsider the role of physical exercise both as a therapeutic and preventive agent of the disease in our daily lives.