Some Greatists wanted a list of healthy snacks that satisfy cravings, and others tried to beat the clock and live forever. Since Greatist's launch in April, these are the 10 most buzzed-about stories among you, our readers!

1. Complete Guide to Workout Nutrition
Protein shake? Granola bar? Cheeseburger? Effective workouts demand complete nutrition. Follow these simple guidelines to make the right choices when fueling up before and after a workout.

2. Complete Guide to Interval Training
This guide gives instructions for targeting maximum fat loss through high-intensity interval training. Learn the basics of interval training and pick the style that works best for you.

3. 80 Healthy Recipe Substitutions
Butter’s blasé, so make a healthier choice and use avocado purée! Check out this list of the top 80 healthy recipe switches to make any meal more nutritious.

4. 88 Unexpected Snacks Under 100 Calories
Don’t be surprised to find cookies and chocolate pudding on this list. When the next snack attack strikes, take one of these satisfying suggestions without ruining appetite or healthy habits.

5. Top 100 Most Influential People in Health and Fitness 2011
The world wouldn’t be the same without the ThighMaster or 30-minute meals. We’ve ranked 100 people making the biggest impact in fitness, health, and happiness.

6. 27 Scientifically-Backed Ways to Get Better Sleep
Tossing and turning all night is never fun. Here’s our list of ways to get better sleep tonight— and wake up on the right side of the bed in the morning.

7. Behind the Scenes: 2011 World Weightlifting Championships
Guest writer David Boffa shares his experiences from the 2011 World Weightlifting Championships in Paris, and his thoughts on why America’s underwhelming performance has fans worried.

8. What’s the Effect of an All-Nighter?
Whether it’s cramming for an exam or party rockin’ in the house, staying up all night can have serious health risks. Find out what happens to the body when you stay up ’til the wee hours.

9. How to Live Forever
Ponce de Leon may not have found the fountain of youth, but there’s plenty of research on the factors that prolong lifespan. Learn about the biology of longevity and the habits of the people who live the longest.

10. 23 Scientifically-Backed Ways to Reduce Stress
Tired of hair-pulling stress? Here’s our list of the best ways to help reduce stress right now, from kissing to self-hypnosis.

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