Holmes, you are hilarious. Would give ya K by I gotta spread it.
It's is all about intensity variation and frequency of intensity.
I work what many would call a hard labor type of job and the first 3-4 months I was tired from it and would get physically drained at work. Now I can work a hard day running around hills, picking up big rocks and shoveling, and still have the gusto to go and set new pr's in the gym prvided I sleep and eat enough. BUT, every day is not like this. Some days I pretty much just spot a more experienced heavy equipment operator and stand there all day. EASY. Sometimes I'm working in a machine and then getting out to do the finishing touches by hand. Others I'm packing block all day by hand. It varies.
Imo, you can train muscles every day, but how hard you train them and/or how much volume you use should be adjusted. One day you could go for like 50-100 bodyweight dips and 250 pushups in a workout for your pressing muscles. That's relatively low intensity/high volume. The next day you hit bench bench with 75% of your normal weight for this exercise for 50-75 reps total and dumbell shoulder press with 1/8th bodyweight for 50-75 total reps. That's medium volume, medium intensity. Then the next day you do singles on barbell bench in 10lbs jumps up to a max single or like 90-95% of your max. That's it. Probably rest and repeat or whatever.
Changing the intensity of exercise and workload is great, but also consider changing the exercise because that affects the nervous system too.