People with more slow-twitch muscles have to do more reps and lift more total weight to get the same muscle growth as people with more fast-twitch muscles, even when both train until exhaustion.

If you're already used to lifting weights, doing more sets and reps over time will help you build bigger muscles and get stronger — but only if you keep training consistently.

If you’ve been lifting for a while, doing more workouts over time will help you build more muscle than just lifting heavier weights.

You can build muscle just as well lifting light weights as heavy ones — as long as you push yourself until you can’t do another rep.

If you lift weights without pushing yourself to total exhaustion, you might get stronger faster—especially if you end up doing more total lifts overall compared to people who do go all the way to failure.

If you lift weights until you can’t do another rep, it doesn’t matter if you’re using light, medium, or heavy weights—you’ll still grow your muscles about the same, as long as you push yourself hard and do enough total work.