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Is Running a Young Person's Sport?
Popular in Cardio
Torch 200 Calories in 20 Minutes
Torch 50 percent more calories than the elliptical while toning your entire body.
Spin to Slim Workout
This DIY ride combines fat-blasting sprints and thigh-trimming climbs in one 30-minute session.
Burn 500 Calories in 30 Minutes!
Maximize every second of your workout with these 5 fat-frying cardio plans.
20-Minute Home Cardio Workout
Forget the treadmill! This quick routine will send your metabolism soaring.
Get Loose! The Best IT Band Stretches
A quick fix for when running results in achy knees and severely tight leg muscles.
How Long Can You Go Without the Gym Before Your Fitness Levels Suffer?
Sure, you're busy, but you may rethink skipping workouts after you hear how quickly your body reverts back to its unfit state.
Make Time on the Treadmill Fly By!
These 4 killer cardio plans torch more calories and kick boredom to the curb.
25-Minute Arc Trainer Workout
Rush to this fat-blasting machine before other gym goers realize how amazing it is!
The 4-Minute Fat-Burning Miracle Workout
And no, we're not exaggerating! See for yourself.
Torch 200+ Calories in 20 Minutes
Burn and firm all over with this high-intensity cardio-sculpting plan.
Better-than-the-Treadmill Cardio Blast
Become a lean, mean, climbing machine with this fat-blasting plan.
Killer Kickboxing Workout
8 awesome drills to torch fat and tone every inch of your body.
10 Fat-Blasting Tabata Plans
Take your tabata off the treadmill and torch mega calories in 4 minutes with these moves.
The Best Cardio for Your Abs
When it comes to melting off belly fat, is all cardio created equal?
Which Workout Burns More Calories?
From swimming to skating, yoga to yard work, see how your favorite sports, workouts, and everyday activities stack up.
Your 7-Minute Fat-Blasting HIIT Workout
No time? With this quickie workout, there's no excuse!
How (In)Accurate Are Calorie Counters at the Gym?
Find out which cardio machines dramatically stretch the truth.
Treadmill Tricks to Burn More Fat
Turn your dreadmill to shredmill with these expert tips for better, faster results.
Which Is Better: Running Faster or Longer?
We're setting the record straight when it comes to distance versus sprints.
The No-Equipment Cardio Workout
This bodyweight circuit makes fitting in a killer fat-burning session simple!
Is It Safe to Run Every Day?
Experts explain how to make this winter weight-loss strategy a healthy--not harmful--habit.
15 Races to Add to Your Half Marathon Bucket List
Take your race game to the next level with these must-try half marathons.
10-Minute Cardio Blast
Shorten your cardio time with this efficient workout from fitness coach Erin Stutland.
A Cardio Workout That's Better Than the Treadmill
Trade your boring run for this fast, fat-burning session!