Cardio exercise, also known as aerobic exercise, is one of the most common workouts that many of us generally include in our daily training sessions. Celebrity stylist Namrata Purohit, known for training Sara Ali Khan, Janhvi Kapoor, Pooja Hegde and more stars, shared this guide on her Instagram page. Janhvi Kapoor and Sara Ali Khan's trainer Namrata Purohit shares 4 …