If you want all of the modern conveniences offered by a gym but prefer to train at home and have the space to spare, a multi-gym could be for you. Most multi-gyms are made from several different weight machines joined together. Many have dual functions, allowing you to perform numerous exercises on just one piece of equipment. Consider your goals, experience and workout schedule when planning your multi-gym workout.

Who the Multi-Gym is For While free-weights are often considered the best form of training for building muscle, beginners may benefit from fixed-weight machines, according to trainer and bodybuilder Lee Hayward. Machines are easier to use, require less balance and coordination, and carry a lower risk of injury for someone starting out. When choosing your multi-gym, look for one that has at least one exercise for every major body part -- your legs, chest, shoulders, back and arms.