I've tried telling them to walk gently but they ignore me. My son runs up the stairs two at a time, and my daughter is only 7 stone and 13 years old but I can hear her now in her bedroom and I worry that the house is not structurally sound enough for the weight of her crashing around in her room. The sound of them upstairs, it's like elephants dancing.
The house is a 1970s semi so maybe this is normal. I keep meaning to ask people but my friends live in either older or newer houses.