Your bird probably spends a lot of time in his cage, but he also needs exercise to stay happy and healthy and to have a good temperament.
Birds like to climb. Provide them with a ladder in their cage (and even one outside their cage for when you take him out). They will go up and down the ladder, and they’ll enjoy the exercise and movement.
Let him flap his wings. Take him out of the cage and perch him on your hand. Holding his feet with one hand, “fly” him around in a circle up and down, making large, slow motions with your arms so that he doesn’t get overly excited and flap too vigorously.
Take your bird on a walk. Yes, for real, but probably not outside. A harness made for your bird is perfect for walking him up and down hallways and corridors in your home.
Let him out of the cage, and let him do his own thing. He might fly, if his wings aren’t clipped. He might hop or walk around. Provide a safe environment for him to move about as HE chooses.