Apakah ada yang tahu latihan yang bagus untuk lengan bawah?

Crimson Garnet

Try the dumbbell exercise where you lean over something or in general, and twist as you're going up. This is more for the side triceps but it might work.  Typically, I just do hand squeeze exercises.  

Sam

go watch youtube

Jack Lee

eat and sleep

RainbowKid

23. Don't know but you know who does??? Google 🤣