If you’ve been free of insomnia for a while, the last thing you want is to encourage its return. For this reason, please consider this a public service announcement: do not train for Iron Man.
For those that don’t know, an Iron Man triathlon involves a 2.4 mile swim followed by 112 miles on a bike followed by a running marathon (26.2 miles). These are raced in that order without a break.
That would be reason enough to avoid Iron Man in our book, but if you need an excuse, tell them you don’t want insomnia.