response: Well, I know that weighted bars, weight stacks or dumbbells are used as a form to provide force of gravity
original_response: Weighted bars, dumbbells, and weight stacks are  good equipment for beginners.
history: My doctor recently suggested that I try weight training, but I'm not sure where to start! Do you know anything about lifting weights? It's a type of strength training for developing the strength and size of muscles. Why does your doctor want you to start weight training? I guess he thinks it be a good addition to the cardio that I regularly do. What are some of the health benefits of weight training? It increases your physical strength. Well, I guess that would be good! Do you know any exercises or equipment for a beginner?
knowledge: It utilizes the force of gravity in the form of weighted bars, dumbbells or weight stacks in order to oppose the force generated by muscle through concentric or eccentric contraction.