Walking will help you to stay healthy. Choosing to walk can help you keep fit and improve your wellbeing. Its less stressful than being part of the traffic each morning.
If a 60kg adult walks at a leisurely pace for just 30 mins they would burn 75 calories. Make that your daily commute at a slightly faster pace and on average you could loose a stone in less than 12 months!
Try the Travel Change Calculator to see what making a change can mean for you. You can find out more about the health benefits of walking on the NHS Choices website
Just being outdoors helps top up your vitamin D levels. Mix up your commute to work by walking part way and feel the benefits.