How Many Sets and Reps Should You Do? A Science-Based Guide

By Mark Johnson · Science Simplified · Published 2026-01-10

The definitive guide to programming sets, reps, and rest periods for strength, hypertrophy, and endurance goals.

Why Sets and Reps Matter

Your rep range determines the primary training stimulus. Different rep ranges emphasise different adaptations.

Rep Ranges Explained

Strength: 1-5 Reps

  • Goal: Maximum force production
  • Rest: 3-5 minutes between sets
  • Sets: 3-6 per exercise
  • Best for: Powerlifters, athletes, strength-focused training
  • Key exercises: Squat, bench press, deadlift, overhead press

    • Hypertrophy: 6-12 Reps

  • Goal: Maximum muscle growth
  • Rest: 60-90 seconds between sets
  • Sets: 3-4 per exercise
  • Best for: Bodybuilding, general muscle building
  • Key exercises: All compound and isolation movements

    • Muscular Endurance: 12-20+ Reps

  • Goal: Fatigue resistance, pump, metabolic stress
  • Rest: 30-60 seconds between sets
  • Sets: 2-3 per exercise
  • Best for: Finishing sets, isolation exercises, injury rehab

    • How Many Sets Per Muscle Group Per Week?

    Research from a 2017 meta-analysis by Schoenfeld et al. provides clear guidelines:

  • Beginners: 10-12 sets per muscle group per week
  • Intermediate: 14-18 sets per muscle group per week
  • Advanced: 18-22+ sets per muscle group per week

    • Important: More Isn't Always Better

    Beyond 20+ sets per week, returns diminish rapidly and recovery becomes a bottleneck. If you're not growing, the answer is rarely "do more sets."

    Rest Period Guidelines

  • Compound lifts (heavy): 2-3 minutes
  • Compound lifts (moderate): 90 seconds-2 minutes
  • Isolation exercises: 60-90 seconds
  • Supersets: 0-30 seconds between exercises, 90 seconds between rounds

    • Practical Programming Example

    Upper Body Day (Hypertrophy Focus):

  • Bench Press — 4 × 8 (2 min rest)
  • Barbell Row — 4 × 10 (90 sec rest)
  • Overhead Press — 3 × 10 (90 sec rest)
  • Cable Fly — 3 × 12 (60 sec rest)
  • Face Pull — 3 × 15 (60 sec rest)
  • Bicep Curl — 3 × 12 (60 sec rest)

    • The Key Takeaway

    For most people pursuing muscle growth, the 6-12 rep range with 3-4 sets per exercise is the sweet spot. But training across all rep ranges throughout the week produces the best overall results.