I'm 58, and I workout 6 days a week. I'm on Test cyp and Nandralone, trt doses, and I have to cycle my workouts according to how my body reacts to each schedule. I did chest-tris, back,-bis, legs, repeat for a couple of months. It got to be too much. Now I train chest, then back, then shoulders or back, then arms, then legs, then repeat. I do 30 minutes cardio 6 days a week also. Im eating a minimum of 3500 calories a day, and track macros.
I've had to deal with tendinitis, lower back strains, shoulder tenderness, and fatigue. When something is sore, tender, or just doesn't feel right, I listen to my body and work around it or do something else entirely. If I'm really not feeling it, I just do a light workout and call it a day. I'm not a young guy anymore, and I want to continue lifting for many more years. Adaption is the key, that and consistency. I've been lifting since I was 11, and have just learned that my body gives me clues, and it's up to me to listen, or not.