A pair of the best black gym leggings are a staple in any workout wardrobe. They go with everything, making them an easy choice for early morning workouts and grab-and-go gym bag packing, and they ...

Helen's streamlined Lululemon workout jacket was the perfect finishing touch to her leggings, white tee and gold hoops combo ...

I decided to use Amazon's black Sunzel leggings as a control ... No matter what you prefer, it's safe to say that leggings can make a big difference in your gym outfit — so choose wisely.