That means I haven't banged my head severely for such a long time.
Also it means I haven't had a neck ache, a sore throat or trouble hearing.
Why haven't I gone to a concert in such a long time?
It's because there haven't any concerts I really want to go to.
The closing of Pound is one of reasons why I have had fewer opportunities to bang my head.
I've missed watching crazy people moshing.