lucid dreaming

This may sound weird, i woke up exactly 50mins ago, now its 10:45 here at my place. a bit about my dreams since i can remeber.( early 11yrs or 12yrs of age) I have always seen this one boy in my dream who grew up in dream the way i did. He was not watching over or anything, it feels like i know...

Can it like really screw up your timeline? Worst things I've heard are that you can have food missing from your fridge that you don't remember eating. Or the lines in movies will be different (This part actually sounds fun) I would love to experiment with one of these things but I don't wanna...