I recently had quite major surgery.
Before the op some people were scaring the bejaysus out of me saying things like “oh you’ll be in so much pain and be out of action for months” My MIL in particular was saying how awful I’ll feel.
However, shortly after the op those very same people all changed their tune and it turned in to this weird competition to prove that they recovered much more quickly from surgery than me (or anyone else!).
MIL in particular saying things like “I was cooking a roast dinner for a dozen people and cleaned the whole house 5 days post op” (FIL said this is bollocks as she was in hospital for 7 days 
)
Why do people behave this way?! It made me feel shit that I wasn’t able to do more for my kids etc. but then I remember I’m only a couple of weeks post op. My doctor actually told me off for doing too much.
The same with childbirth, some family members claiming to run 10k whilst working 100 hours a week and tandem feeding twins 4 months after birth…. well I may exaggerate but you know what I mean!!