[jamii]

Hangovers cause severe dehydration. It's an extreme case, but a British soldier died last year from a combination of a severe hangover and punitive exercise. Just fell over on the running track and didn't get back up.

[leif]

Ok, but there's a big difference between "severe hangover and punitive exercise" and "ow I've got a headache, I'll still do at least a mile this morning".

[jamii]

Yes, and there's a difference between dying and causing yourself to feel shitty for a few days :-P

[timcederman]

By your logic, I should also avoid drinking water, as it's possible to die from water intoxication.