During the last few weeks I've had quite a few people say that I've lost weight - enough to make me scrutinise my appearance. I can't figure out why they're saying it, though.

I know I've been doing a lot of walking and running alongside my regular training and have also been largely veggie for the last few months, but the scales don't lie. My weight hasn't really changed - so there. Everyone else is wrong and their eyes are defective. I'm not dressing any differently, I'm not sucking in my stomach when people pass by and I'm not getting liposuction done on the sly.

The only difference is that I've got some colour in my cheeks, having spent quite a bit of time in the sun recently - and having a tan doesn't make you appear thinner, surely?