5 Common Mistakes Stopping You from Building Muscle
Building muscle isn’t just about lifting weights—it’s about lifting smarter. Many people hit the gym consistently but don’t see the results they want because of a few common (and easily fixable) mistakes. Let’s look at the top five muscle-building mistakes and how you can avoid them to unlock your potential.
1. Free Weights Aren’t Everything
Free weights are fantastic for building strength, but relying on them exclusively might leave gains on the table. Free weights work multiple muscles at once, but they also fatigue your stabilisers quickly, which can prevent your primary muscles from hitting their max.
The Fix: Combine free weights with machines. Start with compound lifts like squats or bench presses, then switch to machines for isolation exercises like the leg press or chest press. Machines reduce the need for stabilisation, allowing you to push your muscles to failure safely. This combo lets you train smarter, not harder.
2. Sticking to the Same Reps and Weight
Doing the same reps with the same weight for every set might feel consistent, but it’s not challenging your muscles enough. If you’re always hitting 3 sets of 10 without breaking a sweat, you’re leaving potential untapped.
The Fix: Use a rep range, like 8–12, and aim to work close to failure on each set. For example, you might hit 12 reps on the first set, then 10, and finally 8 as fatigue sets in. This method maximises progressive overload, the cornerstone of muscle growth.
3. Resting Too Little Between Sets
Short rest periods can make your workout feel intense, but they can also limit your performance in later sets. Without proper recovery, your muscles won’t be ready to lift at full capacity, especially during heavy compound movements.
The Fix: Rest longer for big lifts. For compound exercises like deadlifts or squats, aim for 3–5 minutes of rest between sets. For isolation moves like curls or tricep extensions, 2–3 minutes is enough. Proper rest keeps your performance strong and your gains steady.
4. Cutting the Range of Motion
Half-repping your squats or skipping the full stretch on bicep curls might feel easier, but it’s not doing your muscles any favours. A full range of motion engages more muscle fibres, increases tension, and delivers better results.
The Fix: Lighten the weight if needed and focus on completing every rep fully. For squats, this means going to parallel or deeper (if flexibility allows). For curls, ensure your arms extend fully before contracting. Over time, this will improve both your strength and your muscle growth.
5. Changing Exercises Too Often
Switching things up might feel exciting, but constantly jumping between exercises makes it hard to measure progress. Your muscles need consistent stimuli to grow, and frequent changes can disrupt that process.
The Fix: Stick to a core set of exercises for each muscle group. Focus on improving your weights, reps, or sets over weeks or months. When progress stalls, adjust variables like rest times or intensity rather than swapping exercises too soon.
Final Thoughts
Building muscle is about consistency, progression, and working smarter. Avoid these common mistakes by combining free weights and machines, challenging yourself with progressive overload, giving your body enough rest, using a full range of motion, and sticking to a structured plan. With these adjustments, you’ll be on your way to bigger, stronger muscles—and a more efficient workout routine.
References:
Schoenfeld BJ, Ogborn D, Krieger JW. Effects of resistance training frequency on measures of muscle hypertrophy: A systematic review and meta-analysis. Sports Med. 2016 Nov;46(11):1689-1697. doi: 10.1007/s40279-016-0543-8. PMID: 27102172. https://pubmed.ncbi.nlm.nih.gov/27102172/
Grgic J, Schoenfeld BJ, Skrepnik M, Davies TB, Mikulic P. Effects of rest interval duration in resistance training on measures of muscular strength: A systematic review. Sports Med. 2018 Dec;48(12): 1373-1387. doi: 10.1007/s40279-018-0914-1. PMID: 30238353. https://pubmed.ncbi.nlm.nih.gov/30238353/
Krieger JW. Single versus multiple sets of resistance exercise: A meta-regression. J Strength Cond Res. 2009 Mar;23(6):1890-1901. doi: 10.1519/JSC.0b013e3181b370be. PMID: 19661829. https://pubmed.ncbi.nlm.nih.gov/19661829/
Wernbom M, Augustsson J, Thomeé R. The influence of frequency, intensity, volume and mode of strength training on whole muscle cross-sectional area in humans. Sports Med. 2007 Mar;37(3):225-264. doi: 10.2165/00007256-200737030-00004. PMID: 17326698. https://pubmed.ncbi.nlm.nih.gov/17326698/
Gentil P, Fisher J, Steele J. A review of the acute effects and long-term adaptations of single- vs. multi-joint exercises during resistance training. Sports Med. 2017 Jun;47(5):921-936. doi: 10.1007/s40279-016-0646-2. PMID: 27837353. https://pubmed.ncbi.nlm.nih.gov/27837353/
