The body responds to physical stress through a complex set of mechanisms, primarily involving the stress hormones like cortisol and adrenaline. These hormones prepare the body for fight or flight, increasing heart rate, blood pressure, and energy availability by mobilizing glucose for immediate use. Additionally, regular physical stress from exercise prompts adaptations that enhance physical resilience and strength over time. Proper management of physical stress, through recovery and nutrition, is vital in promoting an effective response without long-term detrimental effects.