As runners, we understand what training does for our legs, lungs, and heart. We’re also intimately familiar with the other, less attractive ways running impacts our bodies. But we don’t necessarily know why we have to pee even though the shrubs got watered just two miles ago. Or why our knees crackle and pop as we go downstairs.

So we consulted doctors, physiologists, nutritionists, and other experts, and frankly asked them the most quirky and perplexing questions about the bodies we know and love. We also asked for practical advice about how to deal with our issues. Here’s what the experts had to say about what running does to your body.

There are plenty of reasons why this person can leave you in the dust. Some people may be more experienced than others regarding speedwork and racing. Not everyone matches up in terms of VO2 max, mental toughness, and injury history, according to Kristen Dieffenbach, Ph.D., associate professor of athletic coaching education at West Virginia University.

More in category

How the Tiny Kingdom of Bhutan Out-Vaccinated Most of the World
April 18, 2021The NY Times
How the Tiny Kingdom of Bhutan Out-Vaccinated Most of the World
Banish Anxiety About Your Post-Lockdown Looks
April 17, 2021The NY Times
Banish Anxiety About Your Post-Lockdown Looks
How Safe Are You From Covid When You Fly?
April 17, 2021The NY Times
How Safe Are You From Covid When You Fly?
Virus cases and hospitalizations rise sharply in Pennsylvania, and dozens of other states see high caseloads.
April 17, 2021The NY Times
Virus cases and hospitalizations rise sharply in Pennsylvania, and dozens of other states see high caseloads.
If You Spot This in Your Mouth, You're at Risk for Heart Attack, Says Study
April 17, 2021MSN
If You Spot This in Your Mouth, You're at Risk for Heart Attack, Says Study
You’re Not a ‘Failure’ If You Give Into OCD
April 17, 2021MSN
You’re Not a ‘Failure’ If You Give Into OCD
Eating More of This Nutrient Can Reduce Your Kidney Disease Risk, New Study Says
April 17, 2021MSN
Eating More of This Nutrient Can Reduce Your Kidney Disease Risk, New Study Says
Henry Cavill Broke Down the Scary Hamstring Injury He Suffered on Set
April 17, 2021MSN
Henry Cavill Broke Down the Scary Hamstring Injury He Suffered on Set
You Have to Try These 5 Mountain Climber Variations for a Full-Body Workout
April 17, 2021MSN
You Have to Try These 5 Mountain Climber Variations for a Full-Body Workout
What’s It Like to Run Ahead of Des Linden for 50K? We Have Questions
April 15, 2021Runner's World
What’s It Like to Run Ahead of Des Linden for 50K? We Have Questions
These People
April 17, 2021MSN
These People "Should Not" Get COVID Vaccine, Says CDC
Stop brushing off blood clots linked to birth control, say 3 women who could have died from pill-linked clots
April 17, 2021MSN
Stop brushing off blood clots linked to birth control, say 3 women who could have died from pill-linked clots
Taurus Season Kicks Off Monday & We Could All Use Its Grounded Energy
April 17, 2021mindbodygreen
Taurus Season Kicks Off Monday & We Could All Use Its Grounded Energy
Will the COVID-19 Vaccine Need a Booster Dose?
April 16, 2021Prevention
Will the COVID-19 Vaccine Need a Booster Dose?
Mindful Celebrities That Swear By Meditation For Their Mental & Physical Health
April 16, 2021MSN
Mindful Celebrities That Swear By Meditation For Their Mental & Physical Health
The 13 Best Movies About Climbing Mount Everest
April 15, 2021Men's Health
The 13 Best Movies About Climbing Mount Everest
Boost Your Bench Press With These Moves
April 16, 2021Men's Health
Boost Your Bench Press With These Moves
6 Symptoms of Chronic Inflammation You Shouldn't Ignore, Say Experts
April 16, 2021MSN
6 Symptoms of Chronic Inflammation You Shouldn't Ignore, Say Experts
The Best Water Bottles for Runners
April 16, 2021MSN
The Best Water Bottles for Runners
Makeup mogul Jeffree Star hospitalized after 'severe' car accident
April 16, 2021MSN
Makeup mogul Jeffree Star hospitalized after 'severe' car accident
A Line I Heard During Lockdown Completely Changed the Way I See My Body
April 16, 2021MSN
A Line I Heard During Lockdown Completely Changed the Way I See My Body