Check out more great articles:
30-Day Cardio Challenge
Spice up your cardio routine with this 30-day challenge that will teach you aerobic bodyweight movements and pump up your endurance.
30-Day Ab Challenge
Can you complete this challenging month of ab-focused training?
The Fattest Cities in the U.S.
Of the 100 most populated U.S. cities, these 10 zip codes have the highest percentage of overweight residents.
Meet Four Amazing Women Competing in the 2016 Olympic Marathon Trials
These women balance competitive running with demanding jobs and families. Look for them during the 2016 U.S. Women's Olympic Marathon Trials.
How Busy Moms Can Stay in Shape
Moms may be the busiest of us all, but that doesn't mean there isn't time for fitness. Here's how to squeeze a healthy lifestyle into even the most hectic schedules.
30-Day High-Intensity Interval (HIIT) Challenge
There's no magic pill that burns fat overnight. But there is a workout that makes big changes to your body fast. Learn how HIIT can get you quick results.
30-Day Plank and Push-Up Challenge
Skip the crunches and put your weights down. Get down into plank and push-up positions to sculpt and tone your body.
30-Day Foam-Rolling Challenge
A foam cylinder not much longer than your arm and just six inches wide could be the answer to your pain. Who knew, a piece of foam could be so effective?
30-Day Paleo Challenge
Interested in going paleo? Here's the lowdown on all things paleo and a 30-day challenge to help you change your eating habits for good.
30-Day Full-Body Fitness Challenge for 2014
Burn winter calories before it's too late. This month-long challenge will test your core, muscle strength and mental toughness while pushing you to the next fitness level.
4 Tips to Run Faster Off the Bike
Running an IRONMAN marathon will tax you in ways you didn't think possible. Prepare and execute wisely with these tried and true tips.
30-Day Clean-Eating Challenge
Improve energy and metabolism as well as shed a few pounds with this month long clean-eating challenge.
30-Day Burpee Challenge
Love them or hate them, the burpee is an efficient exercise that tests your entire body, and requires no equipment. Start toning up with this month-long challenge.
30-Day Running Challenge: Run Your First or Fastest Mile
Running can be intimidating. It's hard, it can hurt, and it's nonstop. But, with the right training plan, you can run with ease. Follow this month-long guide to help reach your goal.