WHAT IS PROGRESSIVE OVERLOAD?
Progressive overload is the principle of gradually increasing the stress you place on your body during training. It's the foundation of all physical adaptation — whether your goal is strength, muscle growth, or endurance.
The idea is simple: your body adapts to the demands you place on it. If you lift the same weight, for the same number of reps, week after week, your body has no reason to get stronger. It has already adapted. To keep progressing, you need to systematically increase the load over time.
The principle was formally described by American military physician Thomas DeLorme in the 1940s, but the concept is much older. The Greek legend of Milo of Croton — who reportedly carried a calf on his shoulders daily and grew stronger as the calf grew — is an early illustration of progressive overload, albeit anecdotal.
In modern strength training, progressive overload isn't just a good idea — it's a physiological necessity. Without it, adaptation stalls and you hit a plateau. With it, you systematically build strength and muscle mass over months and years.
FOUR METHODS OF PROGRESSIVE OVERLOAD
Many people think progressive overload is only about adding more weight to the bar. But there are several ways to increase the load — and the best programs combine them.
MORE WEIGHT
The most direct method. If you're squatting 80 kg for 3×8, try 82.5 kg next week. Even small jumps of 1-2.5 kg add up to significant progress over months. This approach works best for compound lifts like squats, deadlifts, and bench press.
MORE REPS
Keep the weight constant but do more reps. Go from 80 kg × 8 to 80 kg × 10 over several weeks, then increase the weight. This method is gentler on joints and tendons and works well for isolation exercises like bicep curls or lateral raises.
MORE SETS (VOLUME)
Increase the total number of working sets per muscle group per week. Research shows that 10-20 sets per muscle group per week is optimal for most people. Start at the low end and gradually add sets — this gives the body time to adapt to the increased volume.
SHORTER REST PERIODS
Reduce rest time between sets. If you rest 3 minutes and cut to 2.5, you increase the metabolic stress. This method is most relevant for hypertrophy-focused training, not for maximum strength, where longer rests (3-5 min) are important for lifting heavy.
HOW TO MEASURE PROGRESS
To apply progressive overload effectively, you need a way to quantify your effort. Two important tools are RPE and 1RM.
RPE (Rate of Perceived Exertion)
A scale from 1-10 indicating how hard a set feels. RPE 10 means you couldn't do one more rep. RPE 8 means you had about 2 reps in reserve. Most working sets should be at RPE 7-9 — hard enough to stimulate adaptation, but not so hard that it destroys your recovery.
1RM (One-Rep Max)
The maximum weight you can lift for one repetition. Your 1RM is used to calculate training intensity — e.g. "squat 4×6 at 75% of 1RM". You don't need to test your 1RM directly (it's demanding and carries injury risk). Instead, you can estimate it from your working sets.
Both tools help you manage progressive overload more precisely. Instead of just "trying to lift more," you can program specific load increases based on your current capacity.
COMMON MISTAKES WITH PROGRESSIVE OVERLOAD
Progressive overload sounds simple, but many people make mistakes in practice. Here are the most common ones:
- !Jumps that are too big: Trying to add 5 kg to your bench press every week is unrealistic after the first few months. Micro-jumps of 1-2.5 kg are more sustainable — and over a year, that's 50-130 kg of accumulated progress.
- !Only focusing on weight: If you only think in kilograms, you miss the other forms of overload. More reps, better technique, and more volume all count too.
- !Ignoring recovery: Progressive overload only works if the body has time to adapt. Without adequate sleep, nutrition, and rest, you're not driving adaptation — you're driving overtraining.
- !Sacrificing form for progression: Lifting more weight with poor form isn't progressive overload. It's increased risk. Technique must be consistent, and the load should increase within that framework.
GET A PROGRAM WITH PROGRESSION
Understanding progressive overload is one step. Building it into a program that fits your daily life, your goals, and your level — that's the next step. Send me a message and let's talk about your training.
By Donovan Moloney, MSc Global Health, BSc Nutrition and Health