I recently started a (self study) degree in physics and I'm enjoying it so far, but I feel like my brain has turned to mush. I've been out of education for a while but back when I was in school and college, I could pick new things up really easily, do big calculations in my head, etc. but I just feel stupid now. I'm enjoying the work as I find it really interesting, I'm also doing extra work to help my understanding and I seem to be getting through the material better than most other people. I feel like I'm going to struggle when I reach the later modules though as there are things cropping up that I'm slightly struggling to get my head around. I feel that to succeed in the long run, I should be whizzing through the current material without any trouble at all so I'm not totally happy with my progress. What I'm wondering is, is there anything I can do to kick my brain in to gear? When companies like Nintendo advertise that their Brain Training game increases your brain power, is that true or are things like that just a marketing con? I don't know if doing some kind of mentally challenging task every day like maths quizzes and that kind of thing is going to benefit me, or have I just got older and my brain works differently now. Might seem like a bit of a strange question, but hopefully someone will have a bit of advice. Thanks!