Cherie Rohn took up fencing at home at 75. Now she trains every week as well as doing ballroom dancing.Cherie RohnCherie Rohn, 79, took up fencing at 75. She also works out and does ballroom dancing.She shared some of her secrets to staying so active at almost 80.These include finding an exercise you love and not trying to be perfect all the time.Cherie Rohn, 79, has a very structured week when it comes to workouts.On Sundays, she does a fencing lesson.