The context of the following conversation is Robin recently had an operation and had been recouperating at home.  Robin decided to go out for a walk but quickly became tired.:
Robin says I think I pushed myself a bit too hard..
The friend responds Oh? What happened?.
Robin responds You know I've been recovering from surgery at home, right?.
The friend responds Yeah, did you follow the doctor's advice?.
Robin responds I did. I started to get some mild exercise after the recommended rest, but became really tired..
The friend responds It's best to rest another week before trying that again..