Bugger the lot of them Andrew. You're fit enough to do the cycling carrying yourself, the luggage and the bike weight all that way. Unless your weight is making you unwell I'd just go with the flow. We're not all built like whippets you know.
I change shape after a cycling tour. The waist trims but the weight rarely dips. It didn't help that we toured in France this year.
I keep promising myself to go for a concerted weight loss effort but the motivation just isn't there. I don't smoke and drink very little these days. I only have two vices and one of them is cake.