Final answer:
Children under stress may react physically with increased heart rate, heavy breathing, and muscle tension. Chronic stress can lead to exhaustion, illness, and a weakened immune system. It also impacts mental health, causing issues like depression and risky behaviors.
Step-by-step explanation:
Children under stress may exhibit various physical reactions as part of their body's natural response to stressors. Potential physical symptoms include an increased heart rate, heavy breathing, and muscle tension, as these are part of the fight-or-flight response that prepares the body for quick action. Long-term or chronic stress can lead to more severe consequences such as exhaustion, illness, and a weakened immune system. Additionally, stress can prompt cognitive and emotional effects, where affected children might experience mental health issues like depression or anxiety, and engage in risky behaviors, which adversely impact not only themselves but also society.