There are so many exercises to be fit and fine but i find running the  best one because of its various health benefits and also because it's  free of cost.Here are some of it's health benefits.
One of the most popular benefits of running is to reduce or manage    weight. It burns more calories per minute, than any other form of    cardiovascular exercise. Research proves the fact that running burns an    average of 100 calories per each mile.
Regular running raises HDL (good) cholesterol, reduces the risk of blood    clots and encourages use of the 50% of your       lungs that usually  go   unused.
Because running is such a good form of exercise boosting your cardio    vascular and respiratory systems, this improves your body's ability to    fight off coughs, colds and viruses. Whilst it won't make you immune to    them you will find that you suffer less and recover more quiRunning  -- like other types of exercise -- is a great stress-reliever   and may  even relieve mild depression. Many runners enjoy reaching the    "runner's high" -- that euphoric, clear, and calm state they feel after a    long run.

