[Thankfully, Ion's just about the least likely person to be insulted by a lack of tact. The bluntness of her question is overridden by her helping him by moving the chairs, anyway.]

Ah-- thank you! [He'll take a seat before replying -- he may be healthy now, but getting up so much tonight was making him tired!] It's a bit of a long story, but they're just a little weak right now. I haven't been walking very much for the past few months.