Why are the effects from massages so fleeting?

I love getting massages. Love them. They feel great. Especially as I’m getting them.

Why, though, every time I go to sleep after getting a massage, am I all achy, and feel about the same as I did before I got the massages?

I have pretty darn good use, so I don’t think it’s they way I hold my body day-to-day that has to do with the ephemeral effects.