Similar to dancing classes or the aforementioned trampolining, rollerblading, also known as inline skating, increases heart rate as a kind of cardio exercise. In particular, your thighs and glutes will benefit from inline skating's ability to increase strength and endurance. "Rollerblading actually stimulates a tremendous amount of muscular development," said Matt Scarfo, a personal trainer in New York City. The quads, glutes, hamstrings, and inner thigh muscles are loaded during skating strides in a way that is not stimulated by comparable exercises like walking. Skating requires balance, so it also develops the deep core muscles that are important for keeping a person stable and upright. Rollerblading is also low impact, making it a suitable choice for anyone who doesn't want to overexert themselves.