Trauma can significantly impact the body, causing physical symptoms like fatigue, disturbed sleep, headaches, nausea, increased heart rate, excessive sweating, digestive issues, and difficulty concentrating, often due to the body's "fight or flight" response triggered by the traumatic event, which can lead to long-term health problems if left untreated, including increased risk of chronic diseases like heart disease, diabetes, and autoimmune disorders; it can also manifest in changes in appetite, substance use, and overall self-care habits.