sentence: A woman talks, facing the camera while holding two dumbbells and then demonstrates a spin cycle exercise in front of a class in a gym. sentence:   A woman stands and talks while facing the the camera, in a gym, with a wall of mirrors to her side and several people behind her standing near various pieces of gym equipment. sentence:   The woman, now wearing a headset with a mic attached to the mouthpiece,  starts cycling very fast on a spin cycle machine in front of a mirror with a class of people behind her who are also on spin cycle machines. sentence:   The woman then lifts dumbbells with her arms while standing, lifts dumbbells while sitting on the floor and then returns to the spin cycle machine before the scene fades to black.