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the transportation of any ânegro or mullatoâ for the purposes of returning the person to slaveryâbecause federal law superseded state law.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.
Dumbbell Calorie Burn. Dumbbell exercises provide a low calorie burn, and one that is just a fraction of such aerobic exercises as running and riding a bicycle. According to the calorie-tracking website HealthStatus, a 140-pound person will burn about 163 calories during a 45-minute weight-training session.