Working out and weightlifting helps me too. You can't really lift in an olympic sense with bad mobility.
I try to do a combination of sitting and standing to keep my hips from getting too tight, which can end up creating an anterior pelvic tilt that will cause back pain. I'll do couch stretches[1] to open my hip flexors and banded pull-aparts[2] to alleviate some of the rounded shoulder issues that we all get from sitting and typing all day.
