protect your lungs...

Pollution is no joke.

Clean air is considered to be a basic requirement of human health and well-being. However, air pollution continues to pose a significant threat to health worldwide. According to a WHO assessment of the burden of disease due to air pollution, more than 2 million premature deaths each year can be attributed to the effects of urban outdoor air pollution and indoor air pollution (caused by the burning of solid fuels).[1]

If you spend much time running or biking in an urban area consider protecting yourself with a mask like the one pictured above. The mask pictured is a Respro.

Check out their homepage here.
If you live stateside you can order from here.