My 4 year old is a naturally early riser. He bounces out of bed at 5, sometimes before, shouting for me and asking for breakfast. I've tried to get him to stay in bed or his room at least but there's zero chance of him going back to sleep. He is full of beans. I get up with him every day. Occasionally at the weekend DH will 'let me have a lie in' on one of the days. What this means is that I get up at 5 as usual and a couple of hours later he wanders down and suggests I go back to bed. When I've been up for 2 hours, drank 3 cups of coffee, made breakfast and watched a film on Disney+ there's no chance of me going back to sleep. I sometimes go back to bed and just read or mumsnet. It gets my back up when he then says I had a lie in. It's not a lie in.