The debate between low-repetition and high-repetition training is an ongoing one in the fitness world, and both have their advantages depending on your fitness goals.

**Low Reps (Strength Training):**
- Typically involves lifting heavier weights for fewer repetitions (usually 1-6 reps per set).
- Emphasizes building strength and power by challenging your muscles with heavier loads.
- Promotes neural adaptations, improving your ability to recruit muscle fibers efficiently.
- Ideal for individuals aiming to increase maximal strength and muscle mass.
- Longer rest periods between sets are often required to allow for recovery due to the intensity.

**High Reps (Endurance or Hypertrophy Training):**
- Involves lifting lighter weights for higher repetitions (around 8-15+ reps per set).
- Focuses on muscle endurance, metabolic stress, and muscle hypertrophy (growth).
- Increases time under tension, potentially leading to greater muscle endurance and size.
- Can improve cardiovascular fitness due to the higher repetition ranges.
- Shorter rest periods between sets are common to maintain a level of fatigue throughout the workout.

For bodybuilders, incorporating both low and high rep ranges into their training routines can yield comprehensive results. Hypertrophy (muscle growth) is often stimulated with higher repetitions, whereas strength gains are driven by lower repetitions with heavier weights. Many bodybuilders cycle through different training phases, known as periodization, to maximize both strength and muscle size.

Ultimately, the best approach often involves a combination of both low and high rep training, tailored to individual goals and preferences. Varying your workouts can prevent plateaus and keep your muscles challenged, leading to overall better progress.