mid 30's? my god a mere child. wait till you hit your 60's.
i try to avoid any painting, plastering, fixing the grandkids bikes. but the wife starts up with the verbal and (wound-up) off i go!
up till about 5 years ago i could do a 4 hour straight set, standing and dancing (not much movement mind you) night after night.
last saturday i played from 8.30 to 11 15 and my legs were cream crackered, my back ached and my voice was hoarse for my sunday gig. the worst part is i've got no singing voice at all today (monday) and my real enjoyment is sitting in my front room, otherwise known as my studio, writing and recording new songs accompanied of course by my guitar or piano. fortunately, my fingers are fine.
here's a tip; whilst we were in Lanzarote recently, we bought some Aloe Vera gel, which i rub into my fingers. i'm not saying it's a miracle cure, but my fingers are working well (at the moment)