Training with a purpose means understanding your weight lifting goals and the number of reps you want to lift to build size, strength, or endurance.
Reps and Sets: How Many Reps Should You Do?
How many reps are ideal for bench press set? - Quora
How many reps and sets should you do? · MuscleTech
The Weightlifting Rep-Range Rule Is a Myth. Here's How to Train for Muscle.
The Rep Ranges for Hypertrophy, Strength, and Endurance Workouts
Kettlebell Swings Sets and Reps: How Many Should You Do? – Sport Science Insider
Reps and Sets: How Many Reps Should You Do?
How Many Exercises And Sets Should I Do Per Muscle Group? - SET FOR SET
The Hypertrophy Rep Range: How Many Reps to Build Muscle?