There is a tendency that ass the youngsters take the adulthood they neglect the need for physical fitness. This reduces the resistant power against diseases and ultimately the number of patients will increase. The number of people, who take up exercise for fitness in their routine for a life time, is only 58 percent of the entire population. The fitness of the body is based on the restrictions that are put on the body physically and what all one is able to do in a certain lifestyle, like what you eat and what are your habits. Here is a little history about the components used in physical fitness. With a fit body one can survive longer as the body has more capacity to keep and maintain the required levels of oxygen and all the nutrients that are essential for the perfect functioning of the body. If you want you can also include members of your family to make it more fun. This way you can promote fitness and have fun altogether. In case you are not a sports type one and you think that sports cannot be fun then you can think of dancing. Dancing is yet another way to keep you fit and stays entertained. The movements of the belly dance are out of the way. The hips are pushed, raised and shimmed in belly dance and also, the pelvic muscles are required to be tilted along with rolling the body. For the hand movements they are moved like a snake. You need to shim both the legs together or one after the other. For those, who opt for the free weights; can go for the barbells and the dumbbells, which are latest on the block. You can find single piece, single weight dumbbells easily. There are others which are quite like barbells. The weights on the either sides of the bar in the center can be removed. This is to make it easy to change the weights and set as per one needs. The costs of these weights can be as low as $50 or much lower. But you require a collection of weights that are like hand-held dumbbell preferably with a bar or something similar to it. You can change the weights at the end of this bar as and when you like and according to your requirement. It is your choice if you want to select metal or plastic weights.