Hoping for a bit of perspective on this as feel really upset by it. The last few months I've managed to get into what (to me) was a pretty consistent exercise regime of running 3x a week (I did couch to 5k and now hoping to work my way up to a 10k), and strength training in the gym 2x a week. The other two days I do walking or might do a bit of swimming or cross training at the gym if the weather is awful. Anyway considering I have been overweight my entire adult life and always hated exercise I felt very proud that I have managed to keep this up. SIL asked me about it as I've lost some weight and so I told her what I'd been doing. She said the exercise I was doing was fairly minimal, didn't really count for anything and that the 30 minutes I do of strength training per session was "nowhere near enough". To be clear I push myself really hard during the 30 minutes, I do this amount of time because I have young DC and a busy job and I just do not have the time for longer sessions. She said "oh well I suppose it's better than nothing but it's the bare minimum really".
I feel totally deflated now tbh.