Compound exercises are multi-joint movements that train many muscles at once, such as squats, deadlifts, bench press, rows and pull-ups. Their counterpart is isolation exercises, where mainly one joint and one muscle work, for example lateral raises or curls.
Why they are the foundation
Compound lifts are easy to progress and stimulate several muscle groups in little time. Isolation exercises add targeted work for muscles that fall short, such as side delts, calves or biceps. Pick exercises you can do cleanly, through a full range of motion and without pain, and stick with them for a few months. Only then can you see whether you are getting stronger.
Counting sets correctly
Because compound lifts hit several muscles, the question is how to count them for volume. A proven approach: count the main muscle fully and assisting muscles as half. This method fit the study data best in a large analysis (Pelland et al. 2026).
Example: Four sets of bench press count as 4 sets for chest and 2 sets for triceps. That way your arms often reach the usual range of 10 to 20 sets per week with only a few direct sets. This is an example.
Intensity and rest
With heavy compound lifts, training to failure has a price: it costs more recovery and is a risk without a spotter or safeties. Typical targets are 1 to 3 reps in reserve and rest periods of 2 to 3 minutes. Warm-up sets with increasing weight are worth it before your first compound lift. One-rep max formulas also work best for barbell compound lifts.