LB is the British weight unit pound. One pound is equal to 0.45359 kg, so the 6lb dumbbell weighs 2.72154kg. Dumbbells are a kind of auxiliary equipment for weight lifting and fitness practice. They are smaller than barbells and have no sound during practice and use. Its main material is cast iron, wrapped with a layer of rubber. It is often used in muscle strength training and muscle compound movement training. The misunderstanding of dumbbell holds that exercise with dumbbell can not only increase strength, but also build body. For professional sports, dumbbell exercise can improve strength, but the bodybuilding effect is not obvious. If you specialize in bodybuilding, the increase in strength is relatively small.
It is believed that dumbbells can only practice bodybuilding upper limbs. If you want to exercise comprehensively, you need more complex equipment. In fact, dumbbell exercise can not only exercise the upper limbs, but also exercise the waist and abdomen muscles.
It is considered that dumbbells are not suitable for the elderly. With age, the muscles of the elderly will naturally shrink and their strength will decline. Proper exercise with dumbbells can delay the process of muscle atrophy and maintain muscle elasticity and strength. （6lbELingDuoShaokg）