• Events

    Running

    RunningCouch to 5K5K10KHalf MarathonMarathonSee All

    Outdoor

    OutdoorCampingHikingSee All

    Triathlon

    TriathlonSprintOlympic/InternationalIRONMAN 70.3IRONMANSee All

    Cycling

    CyclingRoad CyclingCentury RidesMountain BikingSee All

    Sports

    BaseballBasketballFootballGolfMartial ArtsSoccerSoftballSwimmingTennisVolleyballWinter SportsYoga

    hidden

    active kidsactive kidsSports CampsBrowse All EventsRace Results
  • Calculators

    Calculators

    Running PaceBody Fat PercentageBody Mass Index (BMI)Ideal WeightHeart Rate
    Caloric NeedsNutritional NeedsBasal Metabolic Rate (BMR)Kids' Body Mass Index (BMI)
  • Running

    Running Events

    RunningCouch to 5K5K10KHalf MarathonMarathonSee All

    Running Articles

    RunningDistance RunningTrail RunningMud RunningTraining PlansProduct Reviews
  • Triathlon

    Triathlon Events

    TriathlonSuper SprintSprintOlympic/InternationalIRONMAN 70.3IRONMANSee All

    Cycling Events

    CyclingRoad CyclingCentury RidesMountain BikingSee All

    Triathlon Articles

    TriathlonDuathlonTraining PlansProduct Reviews

    Cycling Articles

    CyclingMountain BikingCyclo-CrossBMXTraining PlansProduct Reviews
  • Fitness

    Fitness Events

    FitnessWalkingYogaStrength TrainingPilatesWeight LiftingSee All

    Fitness Articles

    FitnessWorkoutsWalkingYogaWeight LossTraining PlansProduct Reviews
  • Sports

    Sports Events

    BaseballBasketballFootballGolfMartial ArtsSoccerSoftballSwimmingTennisVolleyballWinter Sports

    Outdoor Events

    OutdoorCampingHikingBook CampgroundSee All

    Sports Articles

    SportsSwimmingBasketballTennisBaseballSoccerSoftballVolleyballFootballLacrosseGolf

    hidden

    Water SportsIce HockeyGymnasticsMartial ArtsSkiCampingHikingTravelSailingDanceSnowshoeing
  • Nutrition

    Nutrition Articles

    NutritionMeal PrepRecipesSnacksSupplementsProduct Reviews

    Health & Injury Articles

    Health & InjuryPhysical HealthMental HealthPainInjury PreventionRecoverySleepProduct Reviews
  • Kids & Family

    Kids

    Infants (0-1)Toddlers (2-4)Big Kids (5-8)Tweens (9-12)Teens (13-18)

    Events

    SwimmingBasketballBaseballSoccerTennisVolleyballFootballMartial ArtsChildcare

    hidden

    YogaCheerleadingGymnasticsDanceMusicArts & CraftsKids FitnessSee All

    hidden

    active kidsactive kids
  1. Home
  2. >
  3. Fitness Articles
  4. >
  5. Core Ab Training
Core Training

Featured

My Experience with AlterMe DNA Health & Fitness DNA Report

Discover how AlterMe’s DNA report provides personalized health & fitness insights, secure data handling, & expert guidance. Learn more about your b...

By Stephen Gendreau

I Spent 60 Days Wearing The UltraHuman Ring Air – Here’s What I Think

Are you curious about the UltraHuman Ring Air? It's a minimalist, high-tech health tracker that delivers real insights. Here's my honest review aft...

By Stephen Gendreau

How Runners Can Benefit From The New KT Soothe Line For Pain Relief And Muscle Recovery

Discover KT's Soothe Line, which contains lavender and magnesium for pain relief and muscle recovery. It is perfect for runners. Visit now and rule...

What is Tabata Training?

Short on time or need a change of pace? Learn what tabata training is and how you can get a butt-blasting workout done in four minutes.

By Fara Rosenzweig

Latest

How to Gain Strength Without Lifting Weights

Put down the weights and allow your body to get stronger with these five recovery methods.

By Michael Easter

10 Fitness Secrets From Top Athletic Trainers

Turbocharge your sweat sessions with these secrets from some of the best female athletic trainers in the country.

By Kimberly Hiss

How to Balance Diet and Exercise

Despite your best intentions at the gym and in the kitchen, you're not seeing your desired weight-loss results. Use this guide to find the balance ...

By Sushma Subramanian

5 Reasons to Take a Fitness Vacation

Tired of the same old lazy do-nothing trip? Here are five fitness vacations worth checking out.

By Hopper McDonough

6 Ways to Lose Your Gut and Get Ripped Abs

Lose your gut and get ripped abs with this fast six-pack workout.

By Adam Bornstein

7 Fat-Blasting Cardio Workouts

Bored of the treadmill and elliptical? Here are seven overlooked options that can fast-track your results when boredom strikes.

By Jenna Bergen

Train for an Obstacle Course With The Kettlebell Swing

From proper form to a workout routine, find out how to utilize kettlebells to be race-day ready for your obstacle course race.

By Joe Vennare

8 Winter Activities That Burn Calories

Lace up your snow boots, zip up your jackets, and head outdoors. Whether you want to try something new, like curling, or stick to your favorite spo...

  • ACTIVE Logo
  • ACTIVE is the leader in online event registrations from 5k running races and marathons to softball leagues and local events. ACTIVE also makes it easy to learn and prepare for all the things you love to do with expert resources, training plans and fitness calculators.

Follow ACTIVE
  • Facebook
  • Twitter
  • Pinterest
  • Instagram
Mobile Apps
  • ACTIVE.com App
  • Couch to 5K®
  • 5K to 10K
  • Meet Mobile
  • View All Mobile Apps
Things To Do
  • Running Races
  • Triathlon Races
  • Cycling
  • Mountain Biking
  • 5K Races
  • 10K Races
  • More Things to Do
  • Half Marathon
  • Marathon
  • Ultra Running
  • Trail Running
  • Mud Runs
  • Swimming
Popular on ACTIVE.com
  • San Diego
  • Los Angeles
  • New York City
  • Denver
  • Houston
  • Las Vegas
  • BMI Calculator
  • Calorie Calculator
  • 5K Training
  • Couch to 5K®
  • Half Marathon Training
  • Marathon Training
  • Organizer Technology Solutions
  • Earn Money
  • Account Access
  • Subscribe to Our Newsletter
  • Do Not Sell My Personal Information
  • About ACTIVE.com
  • Sitemap
  • Terms of Use
  • Copyright Policy
  • Privacy Notice
  • Privacy Settings
  • Careers
  • Support & Feedback
  • ACTIVE Access
  • Registration Software
  • Social Media Guidelines
  • Community Policies
  • Cookies Settings
  • ©2025Active Network, LLC and/or its affiliates and licensors. All rights reserved.