Dr. Jason Karp, Active.com

Dr. Jason Karp

Active.com

San Diego, CA, United States

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Past articles by Dr.:

What Women Runners Need to Know About Their Bodies

Sure, we got that talk back in middle school. But the miles we log affects our bodies differently than men. → Read More

Should Runners Train by Heart Rate?

By using heart rate to train, this runner found that to get faster, she had to slow down. → Read More

Basal Metabolic Rate (BMR) Calculator

Use the basal metabolic rate (BMR) calculator to determine the number of calories you’d burn if you stayed in bed all day. → Read More

Can Strength Training (Really) Make You a Faster Runner?

Strength and core training have become the new buzzwords in running. Do they really give you faster PRs? → Read More

6 Exercises You Can Do in an Airport

Have a layover between flights? Here's how to get fit while waiting to board the plane. → Read More

Get Down and Dirty at These Spring Mud Runs

Want to get dirty? Get a sneak peak at the top spring mud runs in the U.S. → Read More

Must-Have Gear for Beginner Runners

If you're new to running, don't hit the road or trail without these must-have items. → Read More

Running is Bad for Your Knees and Other Top Running Myths

Do you know your running facts from fiction? Debunk some of the running world's most common urban legends. → Read More

9 5Ks to Try in 2015

Whether you run for speed or for fun, check out these popular 5K races in 2015. → Read More

Can Strength Training (Really) Make You a Faster Runner?

Strength and core training have become the new buzzwords in running. Do they really give you faster PRs? → Read More

Run Downhill to Run Faster

Add downhill running to your training and watch your PRs plummet with the hills. → Read More

How to Get Rid of Runner's Cramps

If you've ever gotten a cramp while running, you know how horrible it can be. Find out how to prevent and get rid of those nasty runner's cramps. → Read More

Half Marathon Mile-By-Mile Guide

Run your best half marathon ever with these strategies in our mile-by-mile guide. → Read More

2015 Winter 5Ks

The 5K is the most popular racing distance. Check out these awesome 5Ks this winter. → Read More

Turn Your Workouts From Good to Better to Great

Stuck in a workout rut? Turn your workouts from good to great and run much faster this year. → Read More

Most Inspirational Things Ever Said About Running

The most inspirational things ever said about running will surely get you out the door to run. → Read More

Top 10 Funny Runner Terms

What funny things do runners say? See how many of these 10 runner terms you use in your conversations. → Read More

What Pace Should I Run, Coach?

As a runner, there are only four speeds you need to run. Find out what they are and when to use them. → Read More

3 Awesome Beginner Treadmill Workouts

Want to burn some extra calories this winter? Try these three treadmill workouts to get fit fast and prevent holiday weight gain. → Read More

6 Groovy Reasons to Join a Gym in the New Year

Ever drive by a gym on your way home from work? Here are six reasons to stop in next time and join. → Read More