The presentation by April Jeane T. Ligtas explains the concepts of health and wellness, emphasizing that health encompasses physical, mental, emotional, social, and spiritual well-being. It elaborates on the importance of mental health for overall functioning, differentiating between mental health as a state of well-being and mental illness as a diagnosable condition. Additionally, the presentation outlines characteristics of mentally healthy adolescents, potential triggers for mental disorders, warning signs, and common misconceptions about mental health.