To blow your cobwebs away
Sacudirse la telarañas
If you blow away the cobwebs, you will not only refresh your ideas, but you will also feel more lively. To blow away the cobwebs is then, to break up with the same old boring routine you are stuck to.
Spiders knit cobwebs in the upper corners of the wall, especially those that are never cleaned up. We use the word cobwebs to refer to old things, actions or routines that never change. If you blow them away, you express your wish to have a new fresh start in your life.
During the time I was studying college, I never went to dance, drink with my friends; I never went on holidays, etc. In summary, my life was all surrounding my studies. Now, that I am a graduate, I will blow away the cobwebs and take a long vacation.