Lifting very heavy weights a lot might raise the chance of getting hurt for fit men, because in one study, some guys got knee and shoulder injuries and had to stop, while others lifting lighter...

Lifting heavy weights with fewer reps and longer breaks might cause more joint injuries than lifting lighter weights with more reps and shorter breaks, especially in young men who are already fit.

This study looked at two types of weight training for young men who already lift weights. It found a small hint that powerlifting-style training might help build more squat strength than bodybuilding-style training over 8 weeks, but the results aren't clear enough to be sure—bigger studies are needed.

For trained male powerlifters, performing bench press exercises with lighter weights and more repetitions leads to a greater increase in movement speed at 80% of their maximum lift compared to using heavier weights with fewer repetitions.

For experienced male powerlifters, lifting lighter weights for more repetitions over 12 weeks can lead to the same increase in maximum strength as lifting heavier weights for fewer repetitions, as long as the total amount of work and effort are similar.

If you do heavy weight training for eight weeks, your thigh muscles get stronger—no matter if you use a special band to restrict blood flow after your workout or not.