Hello: If you just practice, 10kg or 15kg is enough. If you want to gain muscle, the effect is better.

I suggest you spend money to buy an adjustable dumbbell of about 30 kg (it can be disassembled into 5 kg. 10 kg. 15 kg. 20).

Kg。 25kg。 30kg) One pay =6 pay (for example, make a double-headed bend with 5kg dumbbells, you

You can easily do more than "12 times", which has little effect on muscle gain and should be aggravated.

Yes Muscle growth needs constant stimulation, so the negative importance gradually increases.

It is recommended that you buy a coated one, because the coating of the general electroplated dumbbell is easy to fall off.