I love my healthy and fit body.

Love here is closer to long acquaintance than to admiration. It's what you feel toward someone who was there the whole time and didn't make a point of it.

This body carried you through the year you'd rather not revisit. It kept turning up to work. It kept digesting food and keeping your heart going through nights you spent staring at the ceiling.

Fitness is a good thing to have on top of that. But the affection underneath is owed for services already rendered, and it doesn't depend on how anything currently looks in a mirror.