Posting on behalf of my DSis, who's had this problem for months.
DSis lives in a large Victorian house that's been chopped into flats. She has the top floor one, and there are two below her. She lives alone, and quietly, but the flooring is old and noisy/creaky, so any movement she does make is amplified downstairs.
She practices yoga to deal with injuries from a car accident and was doing some stretches at about 8.30 this morning when she heard him shouting and swearing at her 'Fucking always fucking banging, FUCK OFF' yadda yadda. He also bangs on the ceiling a lot.
It's not the first time he's responded aggressively to her simply moving around her own flat. Once he came up and shouted at her because she had two friends round and he could 'hear their feet'.
She's starting to get really upset by this neighbour, and feels like she literally has to tiptoe to appease him. I think he's a bully and she should call him out on it and continue to live her (perfectly reasonable!) quiet life.
I’ve suggested she go down and say ‘Sorry, I couldn’t help but hear that you were angry this morning. I was doing yoga in my flat. I’m sorry if it bothered you but I do try very hard to be quiet, it’s just the nature of these old houses’
But then I'm not living there. Is she BU? Is he?!