I think your boredom may be linked to physical inactivity. Aerobic exercises produce endorphins in the brain that give a sense of well-being. Jogging on hard surfaces is wearing on leg joints: hips, knees, ankles. Swimming and cycling take the load off the lower limbs and are good ways to exercise.
There are lots of books to help you find the right kind of exercise to suit your physical condition. Tim Peake, the British astronaut who has just arrived at the International Space Station, will be exercising two hours a day to maintain muscle mass and bone density, as well as the benefits to his cardio-vascular system and mental well-being. You might find inspiration from following his progress in space during the next six months!