Very good advice thanks, I'll maybe work out the minutes per mile and make sure I'm not going too fast at the start.
It seemed like such a good idea to sign up at the time.
Work colleagues: Sign up, it'll be so much fun to all do together!
Me: Okay, let's do this!
...(1 month later)
Me: So how's everyone's training going, are you super psyched like me!?
Work colleagues: Oh...we're not actually doing it anymore
Wha-wha-WHAT!?
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Velcro - what a rip off.