Your Body Under Pressure: What Exercise Really Does to You

Jog on the spot for 30 seconds right now. Stop, place one hand on your chest and one on your stomach. What do you notice? Your heart is pounding, your breathing is faster, and your skin may already feel warm. But why? Your body just switched from 'resting mode' into 'work mode' in seconds — and a whole chain of biological events triggered that shift. This lesson unpacks exactly what is happening inside you, and what changes if you keep training over months.