How many times do you save when you're playing?

I don’t remember losing anything important in Sims 4 due to a crash or power cut, but it’s probably happened. We do get quite a few power outages where I live. 

I’ve kind of trained myself to save often because I’ve frequently lost progress due to crashes when playing Sims 3. I don’t go by time, but I do always save before travelling or after a sim has done something significant in the game.