n = 18

I could see there were going to be issues having a fair snowball fight with uneven numbers on both sides. I have evened things up a bit by persuading my sister to come along. So add one Christine Kennet to the equation. She's a crap shot though so i'd try and get on the other side if I were you. However she does know the offside rule.

She will be a good subject for research as she knows nothing of travel insurance so can't be biased (unless paid).

So that means 18 of us, much better for research to have two sample groups of the same size (not body mass total obviously).


 

Also I have heard rumour of some pilot studies that have taken place. No results are published as yet but here's evidence of the equpment used....

 

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