Simple, science-backed habits that add up to a longer, healthier life.When it comes to longevity, the internet’s advice is seemingly endless. Follow a rigorous workout routine, have a green smoothie every morning, hydrate before drinking a drop of coffee, and the list goes on. But according to the pros, living to 100 can be relatively simple—as long as you’re consistent. We’ve compiled a list of 10 expert-approved tips that can help you kickstar…