Bicycles for cardiovascular training of spinning / indoor cycle in the domestic environment. Here you can buy domestic spinning bikes. They are designed for exercising at home. They are not prepared for intensive use, therefore, they should not be installed in public centers, commercial gyms, etc. because they would lose the warranty. Spinning bikes for home or family use. You can burn calories by designing your own cardio workouts at home or watching a spinning video. fitness material for gym at home.