Lowering weights slowly makes the connective tissue around your muscles rebuild and strengthen more than lifting does, helping your muscle adapt structurally.

Lowering weights slowly turns on different cellular signals and makes your muscle’s scaffolding change more than lifting does—even if both make your muscle bigger.

When you lift weights or push against resistance, your muscles get stronger and bigger because they're trying to handle the stress—this is exactly why people do strength training.

Lowering weights slowly makes muscle fibers longer, while lifting them quickly makes them thicker and more angled—both make muscles bigger, but in different ways.

If you're new to lifting weights, doing exercises where you lower the weight slowly (eccentric) might make your biceps grow bigger than exercises where you lift the weight up (concentric), after 8 weeks of training.

Your muscles don’t make more protein faster when you lower weights slowly vs. lifting them up—so growth must come from rearranging what’s already there, not just making more.