This claim says that how well people can guess how many more reps they have left in a workout doesn't depend on whether they're male or female, how long they've been training, or how strong they are at bench pressing relative to their body weight.

When trained lifters guess how many more reps they could do during bench press, their guesses are equally accurate whether they're guessing 1 rep left or 3 reps left, and this stays the same across different sets and sessions.

People who lift weights regularly are pretty good at guessing how many more reps they could do during bench press, usually only off by less than one rep, and they tend to guess a bit too low.

You don’t have to push yourself to the absolute limit during strength training to get stronger—studies show you can make similar gains even if you stop a few reps short.

Lifting weights close to failure helps build more muscle the closer you get, but it doesn’t seem to matter as much for getting stronger—so the best way to grow muscles might not be the best way to get stronger.

When you lift weights and push yourself almost to the point of not being able to do another rep, you’re more likely to build bigger muscles than if you stop earlier — even if you’re lifting the same weight or doing the same number of sets.