What's the least stressful way to commute?

Pedalling to work came out top in a recent study. But how do the risks and benefits stack up when you allow for injuries and pollution?According to recent research, cycling to work can reduce your risk of early death by 40%. But if avoiding an early demise isn’t enough to get you on a bike, there’s also a more immediate benefit – if you commute by bike, you will feel less stressed and be more productive at work. A study last week in the International Journal of Workplace Health