I am improving my shape every day.

Daily is the wrong scale to look at this on. Nothing visible happens in a day, and a mirror gives you noise rather than signal.

The evidence turns up sideways instead. A photo from eight months ago surfaces on your phone and you notice you were standing differently. A hill on your usual walk quietly stops registering as a hill.

That feedback is always late by design. Which means the stretch of days that felt like nothing were doing something the whole time — you just had no instrument sensitive enough to read them.