What problems did children might face after leading a sedentary lifestyle and have unhealthy eating?

Sedentary Life-Style
Sedentary people have a higher risk of heart attack. They spend most of the day physically inactive and do not exercise regularly. Heart attacks often occur in these people after strenuous activities, such as heavy gardening, jogging, picking up heavy weights, or shoveling snow. But the risk decreases among those who exercise regularly.
A brisk 20- to 30-minute walk three or four times a week may lower the risk of an attack. Regular exercise improves the heart’s ability to pump, helps weight loss, and may decrease cholesterol levels and lower blood pressure.