Just walking regularly alone can significantly improve your health and appearance. According to scientists people who walk for just 3 hours per week have 35% less chance of having a heart attack than those who don't walk for exercise.
Aside from that, I can tell you from my own experience, that walking is an awesome antidepressant(and FREE!), when you just walk, breathe in fresh air and observe surroundings you just can't help but feel better!
So ladies and gentlemen, stop whining that you don't have time for a gym or you're busy, everyone can arrange a 20-40 minute walk non-stop, and you won't recognize yourself in a month. Guaranteed!