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Nutrition & Weight Loss

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Signs of Magnesium Deficiency Runners Should Know

Here’s what you need to know about this important electrolyte and how it supports your health and performance.

By Monique Lebrun

Aug 7, 2025

Fuel

young woman eating a protein bar after training on the quayside in palma de mallorca in spain

Running Gel Alternatives You Actually Want to Eat

mature fitness man on red running track, drinking from blue bottle, wearing gray t shirt. copy space. copy space. close up. lifestyle and sports

When to Drink Electrolytes, According to Experts

By Lauren Keary, NASM

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sugar cookies in the shape of running gear

How Baking Cookies Powers My Long Runs

By Kristine Kearns

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refined grains vs whole grains

Carb-Loading? Here’s What to Know About Grains

By Elizabeth Millard

race image library from the 2025 brooklyn half marathon. photographer trevor raab (staff)

How to Fuel a Marathon With a Sensitive Stomach

By Molly Hurford

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Hydration

new york, new york september 05: monique lebrun runs during the 2025 new balance 5th avenue mile on september 05, 2025 in new york city. (photo by marathonfoto/new york road runners via getty images)

The Price I Paid for Running My Fastest Mile Without a Race-Day Plan

By Monique Lebrun

adjusting water bottle on hydration vest

The 7 Best Hydration Packs for Runners

a person putting their phone into a handheld water bottle pouch

The 5 Best Handheld Water Bottles

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runner eating energy gel during boston marathon

How to Fuel Your Marathon to Avoid Bonking

By Lauren Bedosky

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running stock image library for runners world us. various images of runners. shoot date: sept 11, 2021, location: boston, ma.

What to Eat to Beat the Heat

By Ashley Mateo

Aug 7, 2025

Weight Loss

large group of people in blurred motion running a marathon in nature

Here’s Exactly How to Start Running for Weight Loss

by Kiera Carter, Hailey Middlebrook and Ashley Mateo

focus on fitness gains over weight loss

Focus on Fitness Gains Over Weight Loss for Health

By Elizabeth Millard

erin pinneo how running change me

She Maintained a 40-Pound Weight Loss With Running

By Erin Pinneo, as told to Emily J. Shiffer

dawn desarmeau running weight loss

This Runner Has Kept Off 100 Pounds for 11 Years

By Flower Desarmeau, as told to Emily Shiffer

running shoes barefoot running shoes closeup

Your Complete Guide to Running for Weight Loss

by Ashley Mateo, Hailey Middlebrook and Kiera Carter

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race image library from the 2025 brooklyn half marathon. photographer trevor raab (staff)

Should Runners Be Worried About Colon Cancer?

By Caitlin Carlson

race training and gut health

How to Train Your Gut Before Race Day

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jen acker running up a trail in the summer

How Running in Hot Weather Affects Your Gut

By Elizabeth Millard

two runners talking as they run down a sidewalk

Do This Form of Exercise to Improve Gut Health

By Elizabeth Millard

Aug 7, 2025

More Nutrition & Weight Loss

grabbing huma energy gel packet out of running shorts pocket

The 6 Best Energy Gels for Runners

athletic woman in sportswear with measuring spoon in her hand puts portion of whey protein powder into a shaker on wooden table with amino acid white capsules, bananas and apple, making protein drink

What Are the Benefits of Creatine for Runners?

woman having healthy lunch

The Best Carbs for Runners

by Kim McDevitt and Monique Lebrun

running snacks are pricey�so i found cheaper options that are just as good

My Favorite Budget-Friendly Running Snacks

honey stinger, nuun, dripdrop, running fuel, prime day deal

Prime Day Running Fuel Deals

woman drinking water after workout

Every Running Hydration Question, Answered

By Jordan Smith

post workout refreshment

Which Supplements Are Worth Your Money

athletics oly 2020 2021 tokyo

How Kipchoge Hones His Nutrition for the Marathon

By Taylor Dutch

oatmeal, bagel with peanut butter, banana, running sunglasses, watch, headphones

What to Eat Before a Long Run

by Jennifer Acker

young asian female athlete runner drinking protein shake after exercise workout in urban park. diet and healthy food workout exercise.

Does When You Eat Your Protein Really Matter?

By Elizabeth Millard

a variety of foods on a table

How You Fuel Before Your Training Block

By Taylor Dutch

group of runners outside

What Is a Healthy Body Fat Percentage?

By Amanda Capritto

Aug 7, 2025

spelt whole grain spaghetti with vegan bolognese made of green spelt and sunflower seed

Exactly How to Carb Load for a Stronger Race

By dimity mcdowell and Runner's World Editors

ozempic side effects and running here’s how to make sure you stay on your training plan

Taking Ozempic? Keep Running Despite Side Effects!

By Elizabeth Millard

marathon runner putting gel in pocket

Your Marathon Training Diet

By Heather Mayer Irvine

fueling before and during a race

Optimize Your Prerace Nutrition With These Tips

woman adjusting her hair while wearing a cap

4 Energy Gel Alternatives for Runners

By Monique Lebrun

close up of a teenager with a bowl of meusli and fruit

Here's Exactly What to Eat Before a Morning Run

by Pamela Nisevich Bede MS, RD, CSSD, LD and Runner's World Editors

fasted cardio and whether it will help you

Fasted Cardio—The Truth Behind the Hype

By Ashley Mateo

grilled chicken salad with avocado

6 Signs You’re Not Getting Enough Protein

By Selene Yeager

dry january

How to Successfully Complete Dry January

benefits of pea protein

The Benefits of Pea Protein for Runners

By Matthew Kadey, M.S., R.D.

tired male runner bending in forest

Signs of Vitamin B12 Deficiency

a shoe filled with beer

What Is a Shoey?

By Rozalynn S. Frazier

post run yogurt snack

The Best Post Run Snacks for Better Recovery

tattooed young woman going home after running in the morning

Walking Could Add 11 Years to Your Life, Study

By Madeleine Haase

lunch or snack box with high protein food

14 High-Protein Snacks for Runners

By Jenna Autuori Dedic

protein for vegetarians especially runners

10 Muscle-Building Proteins for Vegetarians

By Matthew Kadey, M.S., R.D.

pasta

Here's Exactly What to Eat Before a Half Marathon

by Pamela Nisevich Bede, M.S., R.D. and Monique Lebrun

flying almond nuts on white background

The Best Biotin-Rich Foods to Try

By Trish Clasen Marsanico

2022 boston half marathon

Are You Drinking Water Wrong?

By Lauren Bedosky

close up of a young group of friends passing and serving food while enjoying together they are having fun, chatting and feasting on food and drinks at dinner party

Exactly What to Eat Before a Marathon

by Liz Applegate, Ph.D.