In the 1840s and 1850s, the Supreme Court began addressing these impositions on statesâ rights. In Prigg v. Pennsylvania (1842), the court struck down a Pennsylvania law preventing the transportation of any ânegro or mullatoâ for the purposes of returning the person to slaveryâbecause federal law superseded state law.
The dumbbell, a type of free weight, is a piece of equipment used in weight training. It can be used individually or in pairs, with one in each hand.
They have the ability to train any part of the body and effectively engage all muscle groups, making this the ideal piece of equipment for anyone, no matter what level of fitness you are at. Previously, dumbbells were basically made up of metal bars with some weights attached to each side.