Lifting very heavy weights a few times with long breaks builds more muscle and strength faster than lifting lighter weights many times with short breaks, when the total amount of lifting isn't the same.

Lifting heavy weights with fewer reps and longer breaks builds more muscle and strength than lifting lighter weights with more reps and shorter breaks in men who already work out.

Lifting heavy weights with fewer reps and longer breaks makes your arms stronger and bigger faster than doing more reps with lighter weights and shorter breaks, especially for guys who already work out.

If you lift heavy weights for fewer reps and lighter weights for more reps but do the same total work, you'll build about the same muscle size, but you'll get stronger faster with the heavy weights.

Lifting heavier weights with proper form was better than lifting lighter weights for building both muscle strength and size in men after 3 months of training.

Doing more sets of weightlifting in one session can help you build bigger muscles and get stronger, but after a certain point, doing even more sets doesn’t help much—around 2 sets is enough for strength, and 11 sets is enough for muscle growth.