In short:
- 8–12 reps per set and 2–3 sets per exercise suit a beginner.
- Train each muscle group 2–3 times a week for optimal progress.
- Rest 60–90 seconds between sets so your muscles can recover.
- Rep count depends on your goal: 3–5 reps for strength, 8–12 for muscle building, 13–20 for endurance.
Rep count is one of the first questions a beginner runs into in the gym. This number determines what kind of adaptation your body gets from training – whether you build strength, muscle mass or endurance. The guide below explains how to choose the right number of reps and sets for your goals.
Which rep count suits a beginner best?
The American College of Sports Medicine (ACSM) recommends 8–12 reps per set for beginners – this range stimulates strength gains and muscle development at the same time (Ratamess et al., 2009). Choose a weight that lets you complete every rep with clean technique, while the last 2–3 reps still take real effort.
A general rule for choosing your rep count:
- 3–5 reps – builds mainly strength (heavy weights, long rest periods between sets)
- 8–12 reps – optimal for muscle building, also known as hypertrophy
- 13–20 reps – builds muscular endurance (lighter weights)
Starting with 8–12 reps suits a beginner, because this range gives the best balance between strength, hypertrophy and injury prevention.
How many sets per exercise should you do?
The number of sets per exercise is just as important a variable. The National Strength and Conditioning Association (NSCA) recommends 1–3 sets per exercise for beginners in the first ten workouts (Kraemer & Ratamess, 2004). A comprehensive meta-analysis showed that training with multiple sets brings considerably more benefit for muscle growth than a single set (Krieger, 2010).
A practical recommendation for beginners:
- First 4–8 weeks: 2 sets per exercise
- Weeks 8–16: 3 sets per exercise
- After that: 3–4 sets per exercise, gradually increasing volume
Your whole workout could consist of 6–8 exercises covering the main muscle groups. That adds up to roughly 15–20 sets per workout – a suitable training load for a beginner who is still getting used to strength training.
How often should a beginner train?
The ACSM recommends that beginners train each muscle group 2–3 times a week (Ratamess et al., 2009). A popular approach is full-body training three times a week (Monday, Wednesday, Friday), since it provides enough stimulus and enough recovery time between muscle groups.
The World Health Organization (WHO) recommends that adults get at least 150–300 minutes of moderate-intensity physical activity a week, plus muscle-strengthening exercises at least 2 times a week. The Estonian Health Board follows the same international recommendations.
Recovery is just as important as training itself. Research confirms that muscle protein is actively synthesized 24–72 hours after training (Schoenfeld et al., 2017), so your body needs enough rest between workouts.
What to do between sets and how to breathe properly?
Proper breathing and rest in the gym, between reps and sets is just as important as choosing your rep count. A rest period of 60–90 seconds between sets suits beginners. For heavier lifts (squat, deadlift) it can be as long as 2–3 minutes, so that the central nervous system has time to recover.
Breathing technique: breathe in before the effort and out during the effort phase (e.g., when pressing the bar up). This helps stabilize the torso and reduces the risk of injury.
How does nutrition support your training results?
Training and nutrition go hand in hand. How many calories a day you need depends on your body weight, activity level and goals. For muscle building you need calories slightly above your maintenance level, for weight loss slightly below. The ISSN recommends 1.6–2.2 g of protein per kilogram of body weight per day for muscle growth (Jäger et al., 2017).
Consistency is the key to success! ArtGym
References
- Ratamess NA, Alvar BA, Evetoch TK et al. (2009). American College of Sports Medicine position stand. Progression models in resistance training for healthy adults. Medicine & Science in Sports & Exercise, 41(3), 687–708. PMID: 19204579
- Kraemer WJ, Ratamess NA. (2004). Fundamentals of resistance training: progression and exercise prescription. Medicine & Science in Sports & Exercise, 36(4), 674–688. PMID: 15064596
- Krieger JW. (2010). Single vs. multiple sets of resistance exercise for muscle hypertrophy: a meta-analysis. Journal of Strength and Conditioning Research, 24(4), 1150–1159. PMID: 20543741
- Schoenfeld BJ, Ogborn D, Krieger JW. (2017). Dose-response relationship between weekly resistance training volume and increases in muscle mass: A systematic review and meta-analysis. Journal of Sports Sciences, 35(11), 1073–1082. PMID: 27433992
- Jäger R, Kerksick CM, Campbell BI et al. (2017). International Society of Sports Nutrition Position Stand: protein and exercise. Journal of the International Society of Sports Nutrition, 14, 20. PMID: 28642676
Frequently asked questions
How many reps should a beginner do in the first ten workouts?
Beginners do well with 8–12 reps per set. This range builds both strength and muscle mass, and it is safe enough for learning technique.
Is one set per exercise enough?
A single set does benefit a complete beginner, but research shows that 2–3 sets per exercise are more effective for muscle growth. Increase the number of sets gradually.
How long should I rest between sets?
60–90 seconds is suitable for beginners. For exercises that work large muscle groups (legs, back), rest can be as long as 2–3 minutes.
Does the rep count change if I want to lose weight?
For weight loss you don’t need to change your rep count much – total training volume and calorie balance matter more. Keep doing 8–12 reps and focus on nutrition.
When should I increase the weight or the rep count?
When you can complete all the planned sets and reps with good technique and the last reps no longer feel hard enough, it’s time to increase the weight by 2.5–5%.
