How to Get Stronger: What Does the Research Say Works Best?
Lift heavy, often and with good rest. A 2023 analysis of 178 studies found heavier loads (above 80% of your max) built the most strength, with the top-ranked approach being multiple heavy sets, three times a week. Practise the lifts you want to be strong at, rest a few minutes between heavy sets and add weight gradually.
Strength isn't quite the same as size. Muscle grows from hard work across a wide range of loads, but maximal strength depends heavily on lifting heavy and practising specific movements. Below is how heavy to lift, how often, how much effort each set needs, which exercises to prioritize, and a simple weekly plan.
How Heavy Should You Lift to Get Stronger?
Heavy enough that you can only do about 1 to 6 reps with good form for your main lifts, which means loads of roughly 80% of your one-rep max or more. Lighter sets still build some strength and plenty of muscle, but heavy sets are what teach your body to produce maximal force.
The 2023 Bayesian network meta-analysis in the British Journal of Sports Medicine included 178 strength studies with 5,097 people. Every training approach beat no training, but higher-load prescriptions above 80% of one-rep max maximized strength gains. The highest-ranked prescription was higher-load, multiset training three times a week.
A 2017 meta-analysis of 21 studies found the same split between size and strength: light and heavy loads built similar muscle, but heavy loads produced bigger gains in one-rep max. If you want both, use heavy sets for your main lifts and moderate loads for your accessory work.
How Often Should You Train Each Lift?
Two or three times a week for the lifts you most want to improve. Strength is partly a skill, and practice matters. Studies find strength gains rise with training frequency, largely because more sessions let you do more total work on the lift.
A 2018 meta-analysis in Sports Medicine of 22 studies found strength gains grew with frequency, with effect sizes of 0.74 at once a week, 0.82 at twice, 0.93 at three times and 1.08 at four or more. When weekly volume was equal, frequency stopped mattering, suggesting the extra sessions help mainly by adding volume.
A 2026 meta-regression in Sports Medicine of 67 studies found strength rose with both volume and frequency, though volume showed clearly diminishing returns for strength. In practice, a few heavy sets of a lift, two or three times a week, gets most of the benefit. A push pull legs split run six days a week, or a three-day full-body plan, are easy ways to do this.
Do You Need to Train to Failure to Get Stronger?
No. Strength gains look similar whether you stop several reps short of failure or go all the way, so there's little reason to grind out every set. Stopping one or two reps short keeps your technique clean, cuts fatigue and lets you train the lift more often.
A 2024 series of meta-regressions in Sports Medicine estimated how close sets were taken to failure across many studies. Strength gains were similar across a wide range of reps in reserve, while muscle growth improved as sets got closer to failure. Effort matters more for size than for strength.
That's useful for heavy lifts like squats, bench presses and deadlifts, where failing a rep carries more risk. Our guide on training to failure explains how to judge how many reps you have left.
Which Exercises Build the Most Strength?
Multi-joint lifts like the squat, deadlift, bench press, overhead press and row. They train several muscles at once and let you lift the most weight. Strength also carries over best to the exact lifts you train, so practise the movements you want to be strong at.
A 2017 study in Frontiers in Physiology compared 8 weeks of only multi-joint exercises with only single-joint exercises in 36 active men, with total work matched. The multi-joint group gained more strength: bench press up 10.9% vs 8.1% and squat up 13.8% vs 8.3%, while body composition changes were similar.
Specificity matters too. A 2025 meta-analysis in Sports Medicine found that strength gains "appear to follow the principle of specificity": two-limb training built more two-limb strength, and one-limb training built more one-limb strength. For a deeper look at the bench, see how to increase your bench press.
How Long Should You Rest Between Heavy Sets?
About two to five minutes on heavy multi-joint lifts. Longer rest lets you lift heavier on each set and complete more total work, which is what drives strength. Smaller exercises like curls or raises need less, around one to two minutes.
Short rest makes your heaviest sets harder to complete at full strength. Our guide on rest between sets covers the research on rest intervals in detail, including why trained lifters benefit from resting at least two minutes on their main lifts.
If time is tight, pair a heavy lift with an exercise for an unrelated muscle, such as a bench press with a row. Each muscle still gets its full rest, and the session finishes sooner. Keep those pairs to accessory work, and give your heaviest sets the full rest.
What Does a Simple Strength Plan Look Like?
Train three days a week, practise each main lift twice, and add a little weight whenever you complete all your reps. Use heavy sets of 3 to 6 reps for the main lifts and lighter sets of 8 to 12 for accessories. Keep a log so you know exactly what to lift next time.
| Day | Main lifts (heavy) | Accessories |
|---|---|---|
| Mon | Squat 4 ร 4 to 6, bench press 4 ร 4 to 6 | Row, leg curl |
| Wed | Deadlift 3 ร 3 to 5, overhead press 4 ร 5 to 6 | Pull up, split squat |
| Fri | Squat 3 ร 5, bench press 3 ร 5 | Row, triceps extension |
Progress in small steps. If you hit the top of your rep range on every set, add 2.5 kg to upper-body lifts or 5 kg to lower-body lifts next session. When progress stalls for a few weeks, a lighter week can help; see what a deload week is.
FAQ
How long does it take to get stronger?
You'll usually notice strength gains within the first few weeks, much of it from your nervous system learning to use muscle better, before size catches up. Our guide on how long it takes to build muscle explains the timeline.
Does creatine make you stronger?
It helps a little, on top of training. A meta-analysis of 53 studies found creatine improved upper-body strength on bench and chest press. Iron Coffee includes 5 g of creatine monohydrate in each serving if you'd like to take it with your morning coffee.
Can you get stronger without getting bigger?
Yes, to a point. Heavy, low-rep training builds a lot of strength through better skill and coordination, with less size gain than high-volume work. Over the long run, though, bigger muscles have more potential to produce force, so most strong lifters also carry more muscle.
Is it better to lift heavy or light for strength?
Heavy. Light loads build muscle about as well as heavy ones when sets go to failure, but heavy loads produce bigger gains in maximal strength. Use both: heavy for your main lifts and lighter, higher-rep work for accessories.
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