Figured I'd make a thread recommending.
I highly recommend getting an inversion table, or some kind of 'anti-gravity' device.
If you've been wanting new plates or something but don't have an anti-gravity equipment piece, then make it your priority. Seriously. Helps counteract compression from regular life activites as well as squating/deadlifting and other heavy lifting.
If you're lower back is aching from lifting/cardio, use an inversion table for even like a minute, then see how it feels. My discomfort decreases significantly if not entirely.
Thread: Inversion table