Running is great form of physical activity which is perhaps the most popular form of cardiovascular exercise in the world. It remains without a doubt the best form of cardio for weight loss. Along with that running is great for your heart, lungs, slows down ageing, reduces depression and has also been found to strengthen one’s bones. It has also been found that running helps your digestive system work more effectively by absorbing more nutrients. It’s also a great stress-buster and boosts serotonin levels. While running is a great form of exercise, people with heart problems should consult a doctor before starting any activity. It should be also be avoided by people who’re extremely obese, who have joint problems or other such chronic ailments.