The New Sport of Quidditch

A sport from Harry Potter lore has many young runners under its spell

squat exercises: man bodyweight squat picture
5 New Squat Moves That Make You Stronger

Improve your running by putting a new twist on an old move

Fight Aches and Pains with the Best Lower-back Exercises

Build strength and endurance—in just 7 minutes a day!

strength training: man lifting weights dumbbell bicep curl picture
12 Exercise Upgrades for Faster Results

Upgrade your resistance routine with these super-effective exercises

Boston Marathon Explosions: Amby Burfoot's Firsthand Account

Amby Burfoot is Editor at Large for Runner's World and winner of the 1968 Boston Marathon. He was nearly finished with the 2013 edition when the explosions occurred

5 Decisions Every Runner Must Make

By all means, run, but where and with whom?

moves personal trainers hate
4 Moves Trainers Hate

Build more muscle by ditching these common workout saboteurs

social vs solo running
Should You Run Solo or In a Group?

There are perks to running with others—and alone. How to get the best of both worlds

How to Become a Group Fitness Instructor

Get credentialed to stand at the front of your favorite fitness class

best running socks
11 Best Socks for Workouts

Invest in quality running socks to take your workout to the next level. Here are the best socks for your next run

Fast Indoor Warmup For Winter Running

Prevent running injuries and hit the ground running with this fast indoor warmup and stretching routine

Man working out with medicine ball
Medicine-Ball Moves That Boost Strength

Try these moves to improve your every ride

best abs workout ever
The Best Abs Workout Ever

Hate doing crunches but want a ripped core? Try this four-part abs workout

Cable Machine Workouts
Tone It All With One Machine

Score a lean, strong physique with just one gym machine: the cable tower

dumbbell chest fly
The Instant Way to Grow Bigger Muscles

Wake up your muscles and accelerate your gains by changing your grip

cyclist road bike picture
The Best Core Workout for Cyclists

Boost power in the saddle with this quick and easy abs routine

los angeles angels batter hit picture
The Angels’ Workout

To build speed, power, and total-body strength, steal a page from the Angels' training manual

cat move
Stability Moves for Runners

These exercises will improve your stability for off-road runs

cyclist's calves
4 Simple Moves for Even Stronger Legs

Your made-by-cycling quads and calves are a big reason you ride. Here's how to make them look—and perform—even better

Build Big Muscle with Sandbags

Shape up by ditching dumbbells for a super sandbag

before and after pictures Natombi Simpson
"Zumba Transformed My Body--I lost 90 Pounds and Counting!'"

Natombi Simpson believed that she'd never be less than a size 24. Now she's a size 8!

weight loss success Keoni Hudoba
This Personal Trainer Danced Off 142 Pounds

Keoni Hudoba sang and danced his way from obesity to a career in fitness

weight loss success Michael Knight
He Dropped 89 Pounds and Found a Career in Fitness

A chronic overeater, Michael Knight went from being an obese bodybuilder to a celebrity trainer

Weight loss success Gina Crome
She Lost 172 Pounds and Became a Dietitian

Dropping half her body weight inspired Gina Crome to help others overcome their own weight struggles

Rishi Sharma weight loss success
He Lost 110 Pounds—11 Years Ago

A trip to the hospital inspired a decade of healthy living for Rishi Sharma

Sissy Lusk
She Walked Away 210 Pounds

Sissy Lusk went from 345 pounds to 135 pounds and has kept it off for 11 years

Diana Barta
She Walked Off Weight—and Kept it Off!

Chronic quick-fix dieter Diana Barta committed to a healthy lifestyle and dropped 67 pounds

Michelle Parcher
Smaller Portions Led to a 71-Pound Weight Loss

Michelle Parcher, a mother of three, successfully dropped and kept off the baby weight (and then some) for five years and counting

Shira Miller
She’s Kept Off 50 Pounds for Two Decades

Shira Miller started her weight loss journey in the 90s and hasn’t looked back

weight loss before and after: Heather Fearneyhough
She Dropped Half Her Weight

Heather Fearneyhough’s children motivated her to shed 120 pounds

Daily Calorie Calculator
Daily Calorie Calculator
Are you eating too much, too little, or just enough? Find out exactly how many calories you should be consuming for weight loss
Pace Calculator
Pace Calculator
Whether you're wondering how quickly you'll finish your next race or exactly how fast you need to run to beat your PR, this tool has the answers
Walking Calculator
Walking Calculator
Find out how many calories you burned while walking with this easy-to-use calculator. Enter your stats to get started!
BMI Calculator
BMI Calculator
Do you need to lose a few pounds? Find out by calculating your body mass index, a basic indicator of healthy weight
Body Fat Calculator
Body Fat Calculator
Get a gauge of your body's percentage of fat with this simple tool. Just enter your weight and a few measurements to get started
Man biking down the road
Bicycling Weight Loss Kick-Start

If you love to ride, but want to see the effects on your waistline, it's time to focus your training. This plan helps you burn more calories after your wheels stop spinning, so you can lose more weight.

Runner crossing finish line
Half-Marathon Jumpstart

Challenge yourself mentally and physically with a half-marathon. This 2-week training jumpstart will help you build your base before you embark on a 10-week training regimen.

Man running along road with mountains behind him
5-K Jumpstart

If you’re new to running, signing up for a race is the perfect way to kick off your routine and boost motivation. The Runner's World 5-K Training Jumpstart will help get you started—in just 2 weeks!