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...

If you're a guy who's already used to lifting weights, doing fewer reps with heavier weights and longer rests might boost your bench press more than doing lots of reps with lighter weights and short breaks — at least over 8 weeks.

If you're a guy who's already been lifting weights, doing fewer reps with heavier weights and longer rests might build more arm muscle over 8 weeks than doing more reps with lighter weights and shorter breaks.

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.

If you're a guy who lifts weights regularly, eating 15% more calories than you burn might help you get stronger on the bench press compared to eating just a little extra or staying even, but it won’t give you an extra boost on squats or leg muscle growth.

Lifting lighter weights many times in a row helps well-trained young men do more push-ups longer than lifting heavier weights fewer times, after 8 weeks of training.