How close to failure should you train?

When men and women who regularly lift weights perform bench presses until they can't complete another rep, men show 29% more short-term muscle fatigue than women. However, when they stop short of failure—at one or three reps in reserve—there is no difference in fatigue between the sexes.

When lifting weights and stopping 3 reps before failure, there is less reduction in muscle strength 24 hours later compared to lifting until complete exhaustion or stopping only 1 rep before failure.

As exercise becomes harder and closer to physical limits, people report higher levels of discomfort, tiredness, muscle soreness, and slower recovery, showing that how fatigued someone feels correlates with how intense the workout is.

When lifting weights until exhaustion with only one minute of rest between sets, doing more than four sets provides little extra benefit in terms of muscle stress or tension because the body becomes too fatigued.

For trained lifters, pushing bench press sets until complete muscle fatigue results in a 25% larger drop in bar speed four minutes after the set compared to stopping three reps before failure, suggesting that how close you get to failure influences the degree of short-term muscle performance decline.