Whether in a health club, store or home, dumbbells are an essential feature that can enhance physical fitness. Capable of being used for many purposes, the variety of weights and shapes include rubber hex dumbbells cast iron dumbbells and power blocks made from rubber with urethane covers. To provide a grip that is more comfortable, today's dumbbells have handles and these are designed ergonomically. This allows you to train comfortably for longer without putting undue strain on your hands-irrespective of the exercise model being followed. With good materials come good quality. Usually made of high performance materials like cast iron or rubber, they have outstanding durability that is also resistant to rust and corrosion. Dumbbells are used for many purposes in health club applications. For simple strength stretches and muscle toning, an exercise one step up from simply holding weights is an option like isolation moves or compound exercises that work more than one muscle group at a time. They're also versatile tools. Anyone can use dumbbells, from people who are completely untrained in exercise right on up to professionals.