Doing more strength training might help your muscles grow bigger, especially in your thighs and arms, but we're not exactly sure how much is best because there hasn't been enough research comparing different workout levels.

The more you lift weights (within reason), the more muscle and strength you tend to gain — and recent studies are showing this pattern more clearly.

The more you lift weights (up to a point), the more muscle and strength you gain—and new studies say it’s a steady climb, not a peak and drop like we used to think.

When you lift weights more often or heavier, your strength goes up fast at first but then slows down a lot quicker than your muscles growing — so strength gets tired of extra work sooner than muscle size does.

Muscle size and strength don’t respond the same way to more training—strength peaks faster, so adding more sets helps muscle growth longer than it helps strength.

Doing resistance training more often each week helps you get stronger more reliably, but it doesn’t always help you build bigger muscles — so frequency matters more for strength than for muscle growth.