If you're someone who regularly lifts weights, doing more triceps exercises each week might help your triceps muscles get a little bigger—but only a little, and not as much as it helps your biceps.

If you're already strength training and you do more sets of bicep exercises each week, your biceps tend to get thicker — and this link isn't just luck, it's a real pattern.

If you're already strength training and you suddenly do more than 50% extra workouts per week, your biceps and triceps might grow a bit more—but if you only increase a little or even cut back, you won't see a big difference in muscle size compared to those who ramped it up a lot.

If you're lifting weights regularly, doing more reps and sets might make your biceps grow bigger, but it doesn't seem to help your triceps grow as much—your arms might just respond differently to extra work.

Even if you lift the same weight every time without making it heavier, your arms can still get noticeably bigger in just two months — at least when you're just starting out and you're a young woman.

Even if you don’t lift heavier weights over time, just doing regular arm workouts for 8 weeks can make your triceps muscles noticeably bigger—way more than just sitting around.