Secondary Curriculum: Fitness Powerpoint Slideshows Click an image to download that slideshow in .pptx format. What is Fitness? Activity – What Counts? Relax Lazy vs Rest Sleep Studies What’s a Calorie? Kinds of Calories Bed of Lettuce It Must Be Healthy Food Facts Probiotics and Prebiotics Your Immune System Portions Sugar Gluten Smoking, Drugs, and Alcohol Safety Steer Your Life