Drop sets made guys feel more tired and their muscles puff up more after one workout, but they didn’t make them stronger in the long run than regular sets.

Drop sets made muscles puff up more and felt harder, but didn’t make the body produce more lactic acid or raise the heart rate more than regular sets.

After one workout, guys who did drop sets were temporarily weaker than before, more so than those who did regular sets.

People felt like they worked much harder during drop sets than during regular sets, even though they did fewer total sets.

Doing drop sets (lifting heavy, then lighter weights without rest) builds strength just as well as doing regular sets with the same total weight, at least in young men who already lift weights.

If you do the same total amount of work, using drop sets won’t make your muscles bigger or stronger than doing regular sets over two months.