That’s a really interesting one! Usually you dont have any control over what you do in your dreams, but there are certain types called “lucid dreams”, in which you suddenly become aware that you’re dreaming and can control yourself! We’re not really sure how these sorts of dreams work yet though, so I can’t tell you how we can control them yet. Sorry!
Hi again ellascientist! You’ve got some really interesting questions 🙂 I think the short answer is that we can’t control ourselves in our dreams unless we’re daydreaming but that is different to the types of dreams we have when we’re asleep. Maybe one day science and technology will be advanced enough to be able to let people control their dreams? Who knows!