Regular brisk walking reduces risk of heart disease, stroke, and type 2 diabetes by 30 to 40 percent in large population studies. It lowers blood pressure, improves HDL cholesterol, and reduces body weight. Unlike high-intensity exercise, walking is sustainable across age groups and carries minimal injury risk.
10,000 steps per day is a useful goal but not a medical guideline. The benefits begin at around 7,000 steps. Breaking sitting time into shorter walks throughout the day shows benefits even in the absence of structured exercise sessions.