• Eat Better
  • Get Fit
  • Manage Weight
  • Live Well
  • More
    • Challenges
    • Topics A-Z
    • Category Directory
    • About Us
JOIN OUR NEWSLETTER
JOIN OUR NEWSLETTER
Sarah Klein
CPT Former Senior Director of Content + Editor in Chief she/her/hers
Sarah Klein is LIVESTRONG.com's senior director of content and editor in chief. She is a Boston-based writer, editor, and certified personal trainer. She has previously worked at Health.com, Prevention magazine, and The Huffington Post. She is a graduate of the Arthur L. Carter Journalism Institute at New York University, a SXSW 2022 panel moderator, a National Press Foundation vaccine boot camp fellow, and a 2019 Mayo Clinic resident journalist.

Experienced In: fitness, sleep health, health

  • Author (29)
  • Contributed (9)
By Sarah Klein
a blue, orange and gray Bombas quarter hiking sock on a blue background
I’ve Tried Countless Pairs of Hiking Socks, and These Are the Most Comfortable and Durable
Fitness
By Sarah Klein
a person wearing a mustard-colored dress sits on a doctor's office table talking to a doctor wearing a white lab coat in a white office
Why We Work With Experts and How They Help Us Fight Medical Misinformation
Health
By Sarah Klein, CPT and Sandra Cahill, RYT and James Norris
a yoga instructor and a yoga practitioner do child's pose on black yoga mats side by side in an empty studio
A 20-Minute Beginner Yoga Flow You Can Modify for Every Ability
Fitness
By Sarah Klein
Prose brand customized shampoo, curl cream and conditioner bottles with pumps on coral background
I Tried This Custom Hair-Care System and Got Healthier, More Defined Curls in 30 Days
Health
By Sarah Klein
ASICS GT-2000 9 running shoes isolated on a white, teal and pink watercolor background
The ASICS GT-2000 Is the Only Running Shoe I'll Ever Buy — and It's Currently 15% Off
Fitness
By Sarah Klein
hand using salad scissors in white salad bowl on green background
This Kitchen Gadget Makes Homemade Salads Look and Taste Like Takeout
Nutrition
By Sarah Klein
man doing side plank in front of brick wall as part of full-body workout
The Ultimate Guide to Full-Body Workouts for Every Fitness Goal
Fitness
By Sarah Klein
woman strength training with a kettlebell at home with her dog
Get Fitter and Stronger With the Ultimate Guide to Strength Training
Fitness
By Sarah Klein
woman doing barbell squat for best lower-body workout
The Best Workouts to Hit Every Muscle in Your Lower Body
Fitness
By Sarah Klein
Woman cycling for exercise on trail near ocean
How to Start Cycling to Get Fit and Strong
Fitness
By Sarah Klein
Man listening to workout music holding a kettlebell
How to Craft the Perfect Workout Playlist, No Matter Your Sweat Style
Fitness
By Sarah Klein
Drawings of people doing weight-loss exercises like running, walking and cycling
Discover Your Ultimate Weight-Loss Workout Plan
Weight Management
By Sarah Klein
Group of people getting ready for a race after following a training schedule
Training for a Race? Here's Exactly Where to Start
Fitness
By Sarah Klein
Woman starting to swim in a pool wearing goggles and swim cap
How to Start Swimming to Crush Your Fitness Goals
Fitness
By Sarah Klein
man and woman running on the beach with blue sky
The 5 Best Outdoor Workouts for Every Fitness Style
Fitness
By Sarah Klein
an overhead photo of three white ceramic bowls of herbal supplements on a green background
2 Herbal Supplements to Avoid if You Take Zoloft
Nutrition
By Sarah Klein
an adult wearing dark leggings and a pink tank top does a barbell back squat in a gym
Hack Squat vs. Back Squat: Which Exercise Is Best for Muscle Growth?
Fitness
By Sarah Klein
an overhead photo of a person eating a salad in a white bowl as a strategy for belly fat loss
On Average, How Long Does It Take to Lose Belly Fat?
Weight Management
By Sarah Klein, CPT and Jill Corleone and John Six, MD
an overhead photo of oats, bananas, milk and other ingredients for a low-sugar protein shake for diabetes on a wooden table
What to Know About Protein Shakes for People With Diabetes
Nutrition
By Sarah Klein
closeup of hand holding omega-3 fish oil capsules above a light green sink
What Happens if You Take Expired Fish Oil?
Nutrition
By Sarah Klein
a young adult with natural hair does a bicep curl at home
The Mechanics of a Biceps Curl and the Muscles It Works
Fitness
By Sarah Klein
How Long Does Your Heart Rate Stay Elevated After Exercise?
Fitness
By Sarah Klein
a young adult wearing a red sweatshirt, a red patterned headscarf and white headphones jogs outside
4 Reasons for Menstrual-Like Cramping During Exercise When You Don't Have Your Period
Health
By Sarah Klein
an adult wearing a red jacket walking 3 miles a day for weight loss outside on a trail under green trees
How to Lose Weight Walking 3 Miles a Day
Fitness
Subscribe for More
Select an option below for personalized health tips delivered daily.
See Our Privacy Notice
  • About Us
  • Editorial Standards
  • Contact Us
  • Meet Our Experts
  • Advertise
  • Terms of Use
  • Privacy Notice
  • Cookie Notice
  • Accessibility
Partner & Licensee of the Livestrong Foundation
leafgroup.com

Copyright © 2024 Leaf Group Ltd. Use of this web site constitutes acceptance of the Livestrong.com Terms of Use , Privacy Notice , Cookie Notice and Copyright Policy . The material appearing on Livestrong.com is for educational use only. It should not be used as a substitute for professional medical advice, diagnosis or treatment. Livestrong is a registered trademark of the Livestrong Foundation. The Livestrong Foundation and Livestrong.com do not endorse any of the products or services that are advertised on the web site. Moreover, we do not select every advertiser or advertisement that appears on the web site-many of the advertisements are served by third party advertising companies.

Manage Preferences | California Notice of Collection