High Reps vs. Low Reps: What's Best for Muscle Growth
- Jeff Zwally
- Sep 14, 2024
- 2 min read
As a personal trainer, I've seen countless clients confused about the best rep range for building muscle. The truth is, there's no one-size-fits-all

answer. Research shows that muscle growth can occur across a spectrum of rep ranges, from low to high.
That said, lifting heavy weights for low reps is crucial for increasing strength, which sets the foundation for long-term muscle growth. It's like practicing a skill - you need to challenge your muscles with heavy loads to adapt and grow stronger.
Let's break down the rep ranges:
Low reps (1-5): Using 80-100% of your one-rep max. Great for strength gains.
Moderate reps (8-12): Using 60-80% of your one-rep max. Balances strength and hypertrophy.
High reps (15+): Using less than 60% of your one-rep max. Improves muscular endurance and can still build muscle.
The key factor for muscle growth is total training volume - reps x sets x weight. Both heavy weights with low reps and lighter weights with high reps can be effective, as long as you're achieving sufficient volume.
My recommendation? Use a mix of rep ranges in your program. Here's an example of an upper body workout that incorporates this approach:
Barbell Bench Press: 4 sets of 4-6 reps (heavy weight, low reps)
Weighted Pull-ups: 3 sets of 6-8 reps (moderately heavy, moderate reps)
Incline Dumbbell Press: 3 sets of 8-10 reps (moderate weight and reps)
Cable Rows: 3 sets of 10-12 reps (moderate weight, higher reps)
Lateral Raises: 3 sets of 12-15 reps (lighter weight, high reps)
Tricep Pushdowns: 3 sets of 12-15 reps (lighter weight, high reps)
This workout starts with compound movements using heavier weights and lower reps, then progresses to isolation exercises with moderate to higher reps. This approach allows you to build strength and achieve the necessary volume for muscle growth.
Remember, consistency and progressive overload are key. Stick to a program, focus on proper form, and gradually increase the weight or reps over time. With patience and hard work, you'll see those muscles grow!"
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