Every little counts, especially if you make it a routine part of your day.
Even on days that I can't get a workout in, I'll throw a few pull-ups in on my bar just for good measure. Sometimes I'll do half a workout. Sometimes I'll just do a quick set before I leave the house.
Every little bit helps. No excuses not to move your body for a minute per day. You'd be surprised how far it goes.
Even if all you can do is some stretches that helps too- and feels great!
I've been trying to work in the stretches ever since I noticed I can't move even half as good as I think is normal. Makes a big difference.
For me, because I sit at a desk quite often, I've found deep hamstring stretches (with weight) and bottom position holds of the goblet squat to be wonderful for my mobility. Hanging if you have a bar is great for the shoulders and upper back too.