The night-walkers of Uganda

Beware of exercising in traffic 
Cycling or jogging can expose you more to 
air pollution - you inhale three times as much 
as if you were walking. The best times of 
day to exercise are early morning or in the 
evening. Alternatively, exercise indoors or in 
a park. Cyclists should stay on side-roads
where possible.
Breathing lessons
Level 1
Elementary
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Breathing lessons
Level 1
Elementary
Where to sit on the bus 
Interestingly, Colvile says that his own research 
shows that sitting on the driver’s side of a bus 
can increase your exposure by 10% compared 
with sitting on the side nearest to the pavement.
Protect yourself indoors too 
On average, we spend about 90% of our time 
indoors and two-thirds of that time is spent at 
home. And indoor pollution can actually be 
more serious than outdoor pollution, it seems. 
Studies by the US Environmental Protection 
Agency (EPA) suggests that pollution levels 
can be two to five times higher indoors than out 
- and this can rapidly rise depending on what 
activity you are doing at home. Centrally-heated, 
carpeted, airtight homes only act to make the
situation worse. 
If you want to reduce the risk, ventilating your 
home is therefore an important step - hopefully 
with air that’s not full of air pollutants from the 
outside. Also, use a good doormat to help 
prevent outdoor pollutants from the pavement 
entering your home.
Living in the suburbs, away from major roads, 
seems the best way to avoid the worse urban air 
pollution. But that then means you are probably 
a car owner and are therefore only making the 
situation worse.
Don’t drive 
The best thing you can do, both for yourself and 
for other people, is to get out of the car. Fuel 
choice is also important: diesel may produce 
less carbon dioxide compared with petrol, which 
is good news in terms of climate change, but it 
produces more ground-level pollutants.
Get out of town 
As long as you go by public transport so as not 
to create yet more pollution, leaving of the city 
offers at least a temporary escape.