Tour de France 2013

And wannabe time triallists.

Are you sure HTFU isn't trademarked by training peaks and doesn't actually mean 'harden the fuck up' at all?

It's probably something like 'Heartrate Training Force Units' so it's merely reminding you to establish your training zones and not (as the naive are led to believe) that it's some measure of implied toughness similar to that displayed by Mr T sitting on a tank and instructing you to "get some nuts!".

tl;dr