Write about by healthy or unhealthy habits. Write Why it’s healthy\unhealthy? You can use following phrases:
to take in more vitamins and minerals keeps you feeling full and energized; 
protects us from strokes and heart diseases, flue and obesity;
to keep our body fit;
avoid getting nervous or worried for no reason;
to make healthier decisions,
shortens our life;
serious illnesses and even death from lung cancer or liver diseases;
helps control weight, maintain healthy bones, muscles;​