differences found with age

I used to drink a 2 liter of mountain dew every day. I used to wake up to a 1 liter and some donuts.
I had 1 can last night at around 10-11 pm... I feel like I'm not tired right now, and yet I don't think I slept for more than 15 minutes straight last night.

I really do think I screwed up my hearing at March Music Madness...
Its not so much that I cant hear, its that I cant distinguish between sounds and so it becomes really mixed and voices especially become kind of garbled up. My dad is hearing impaired... apparently I will be too. Also certain sounds have been a lot more pain causing... like high pitched loud things.