How can I build a simple weekly workout routine?

Start by deciding how many days per week you can realistically commit to, typically 3 to 4 days works well for most people. Split your sessions by muscle groups or movement patterns, for example push movements like chest and shoulders on one day, pull movements like back and biceps on another, and legs on a third day. Add a cardio or full-body day if you have a fourth slot. Keep each session to 45 to 60 minutes, choosing 4 to 6 exercises per workout with 3 sets of 8 to 12 reps each. Rest at least one day between strength sessions to allow recovery. Start light, focus on proper form, and gradually increase weight or reps over time to keep making progress.