I'm not a doctor , but I've got enough aches and pains. Good nutrition, exercise, including stretching are more important now, than when I was young. Mentally I still think I can push hard, but realistically no. I've had a few " where did this come from?" problems, that were related to overuse.
Mikey is right on about water; most of us do not need powerdrinks,etc.
Gloucosamine/chondrotin and vit B complex will help joints and nerve damage. You don't need large doses. I get severe spasms from disc and hip problems . Arnica ( an herb) comes in creams for topical use and pills for oral. It is safe, been around a long time and does not burn or freeze like Icyhot,etc. I have used the arnica cream on 2 ganglion cysts, along with targeted stretching and strengthening. Both times the cysts disolved back into my system, pain gone within a couple of months. No surgery. I am not a paid endorser.
larry