Right I need an outside opinion on this because I’m now at the stage where I genuinely can’t tell if I’m over reacting or not!
So for context- partner agreed to do a 10k with his mates. It was agreed about a year ago and he intended to train for it but didn’t. It was very much a ‘I’ll start tomorrow’ but tomorrow never came. I assumed he was no longer doing it and would do some training and try it again perhaps in 6 months or whenever the next one is but he’s still intending on doing it. Despite having 0 training whatsoever.
His logic is it’s only 10k and it’s a very entry level run, i.e. it’s not a marathon. He thinks he’ll be absolutely fine.
My concerns are that he has absolutely 0 stamina whatsoever (he would say that himself, I’m not being unkind by saying that, I also have 0 stamina for the record!) and plays no sports and I’m concerned that running a 10k on cold turkey could be risky. He is a healthy weight but very much has a fast metabolism. He’s not sporty whatsoever so this run would be something completely out of the ordinary for him. He is also asthmatic and has irregular heart issues, or something along those lines, although his health is under control now.
Obviously he's an adult and it's his choice, but am I being dramatic by being concerned about this? Or is he correct that 10k is doable (albeit sore the next day, but still doable) on no training whatsoever and unlikely to cause any serious harm to his health? I know there's the option just to walk it but he is incredibly competitive when in the moment and I know he will absolutely power through and run the entire way to keep up with his friends (who are serious runners and do this regularly) so I know he will quite literally run until he drops just to keep up with them.
but I am absolutely not a runner and have very little knowledge about any of that. Can someone who knows more about it please let me know, is it likely he’ll be fine (apart from a bit sore and stiff the next day) or am I correct in being concerned for his health?