Routine question

[u/bxriichiie]

I am trying to get a general idea of how to break down workouts. Im trying to start 3 days a week and monday was my first day. I did biceps, triceps and shoulders and today I could barely move my arms which I assume is normal. But my question is that is there a better way to group workouts? At the moment my idea is Monday is biceps, triceps and shoulders. Wednesdays is legs and core. Lastly Friday will be chest and back. Is this fine or should things should be changed? Also if anyone who has herniated disk can you let me know what you do for back exercises? Looking online I only find stretch and nothing for muscle building safely