From meditation how-to to crazy body facts, Twitter is a great source for happiness tips... but only if you’re following the right people.

After a rigorous evaluation process, The Greatist Team whittled down the entire Twittersphere to only the top 38 Greatist-Approved happiness twitter handles worth following. Here's who made the cut:

Interesting Facts

@BodyOdd MSNBC’s Body Odd team constantly answers our “Did you know your body could do this?” questions.

@IPInstituteNYC Go inside the gym with the Under Armour Combine Training with Integrated Performance Institute Owner Michael Torres.

@davezinczenko The man behind the Men’s Health brand: David Zinczenko.

@EditrMH A sneak peek into the mind of Men’s Health magazine editor, Peter Moore.

@OzGarcia Timely studies with personal commentary from nutritionist Oz Garcia.

@DrOz Medical facts can be fun, or at least Dr. Mehmet Oz makes them that way.

@KatherineHobson Tweets from WSJ Health Blogger Katherin Hobson (and self-declared Nutella extraordinaire).

@gruntdoc A glimpse at life as an emergency physician.

@michaelpollan In defense as to why you should follow him, we suggest you check out Michael Pollan’s book In Defense of Food.

@Doctor_V Medicine meets social media in the form of Dr. Bryan Vartabedian.

@DrEades Physician and Protein Power blogger Michael Eades MD doesn’t sugar coat what it takes to be healthy.

@VGidwaney Vinay Gidwaney looks at the emotional side of wellbeing.

@jayparkinson FastCompany's "Doctor of the Future" Jay Parkinson tweets and posts some pretty awesome photos—here’s our current favorite.

@kevinmd A leading physician voice on social media, Dr. Kevin Pho tweets about the future of healthcare.

@drjohnm Cardiac Electrophysiologist Dr. John Mandrola advocates for healthy living through exercise and good choices.

Motivation

@Bodybybass Motivation served in 140 characters from of  Trainer Teddy Bass.

@Sarahstanley Sarah Stanely runs 100 mile marathons like its NBD and tweets along the way.

@DailyEvolution Owner of Evolution Total Wellness Alicia Kirschenheiter shares inspirational tweets designed to inspire.

@Jonosapien Check out the daily whereabouts of athlete Jonas Caruana and just try to keep up.

@Johnisfit Follow John's now-four year journey from "fat to fit."

@Kris_Carr Follow Kris Carr (cancer survivor) on her Crazy Sexy Life journey.

@ElephantJournal Waylon Lewis tweets on the "mindful" life.

@Fitnessita Gina makes us want to step away from the computer and hit the gym.

Meditation

@DeepakChopra Tweets from the living legend and meditation guru Deepak Chopra.

@UncleRush Russell Simmons proves that one way to be #superrich is through inner peace and yoga.

@DrWayneWDyer Follow bestselling author Dr. Wayne W. Dyer’s open dialogue about meditation.

@HealYourLife Wanna know the secret to inner peace (at least in tweet-ready form)? Follow these health and happiness authors.

Fitness, Health, & Happiness Innovation

@Azaaza /@MassiveHealth Former creative lead of Firefox and now founder of Massive Health, Aza Raskin tweets on applying design principles to the problem of being healthy.

@HealthyThinker Insight from the health economist, Jane Sarasohn-Kahn.

@RunKeeper The company behind the hot fitness app tweets about the future of social fitness.

@FitBit The buzzed about program that helps track fitness and health goals… like food journaling, but for fitness.

@Zeo Tweets from the sheets! A monitor that helps track and improve sleep.

@Scotteising Health and wellness professional and innovator Scott Eising shares relevant tweets.

@joshnesbit/@Medic CEO of Medic, Josh Nesbit tweets on global health and mobile technology.

@edbennett Tweets from Ed Bennett on the growing use of social media and its impact on health care.

@GAINfitness A startup that’s revolutionizing the way people work out and integrate fitness into their daily lives.

@shopwell Nutrition information that helps you to make healthier decisions at the grocery store.

@dailyburn The premier fitness tracking tool and fitness social networking.

On the list? Awesome. Share your accomplishment on Twitter (where else?): I'm one of the #Greatist people to follow on Twitter. Read why here: http://grt.st/fJ8RJ1

Who'd we miss? Let us know in the comments now!

And tune in tomorrow for the next Greatist installment where we tackle the top Fitness Tweeters.

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