Building arm muscles with dumbbells

Most people often do simple home workouts at home.

Since I mainly focus on stretching and have very little muscle mass, strength training is essential for me.

Especially because my hand strength and arm strength are weak, I must always do home workouts.

When you hold a 1-kilogram dumbbell tightly in both hands and move it

Compared to exercising with bare hands

The effect increases exponentially~~^^