Brain is a muscle

It's real. One moment you stop remembering new information it seems to work worse. I try to memorise a lot of intresting things for me, certainly the priority is new foreign words. It's a workout for my head, better to do it every day than later try to reconvene this process and cover all the previous information with great efforts instead of learning new. It's important not to be lazy and become a control freak in order to sort out your thoughts.