• 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)
  • Challenges
  • 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

How to Use Resistance Bands for Full Body Workouts

No gym, no problem. This full-body resistance band routine hits everything from your core to your glutes — building strength, mobility, and stabili...

By Kristina Duffy

How to Stay Hydrated While Cycling

Drinking on the bike is a legal performance enhancement

By Greg Kaplan

How to Beat the Heat: Summer Running Tips

Don't let summer heat sideline your training. From smart pacing to plan-B workouts, these five strategies will help you stay consistent — and cool ...

By Megan Harrington

How to Beat the Heat: 8 Summer Fitness Tips

Don't let the heat sideline your fitness goals. Summer's longer days are perfect for getting outside, but rising temperatures mean your usual routi...

By Kristina Duffy

Latest

How Strength Training Can Help You Lose Weight

Looking to drop some unwanted pounds? Skip the constant cardio and reach for the weights instead.

By Stephanie Smith

5 Easy Ways to Lose Body Fat

Are you tired of trying different diets with no results? Here are five key ways to lose body fat and live a healthy lifestyle.

By Steve Marteski

The Healthiest Cities in the U.S.

These 10 cities prioritize the health of their residents by promoting an active lifestyle and providing access to healthy, nutritious food.

By ACTIVE.com

10 Secrets of People Who Actually Love to Work Out

Turn a lackluster attitude into a sustainable healthy habit with these secrets from people who actually enjoy working out.

By Stephanie Smith

12 Reasons You Should Lift Weights

The secret to a longer, healthier life— not to mention a slimmer body— is waiting in the weight room.

By Adam Campbell

6 Yoga Poses that Will Instantly Improve Your Mood

Feeling anxious, unhappy or just plain down? These six yoga poses will help your body relax and your mind find peace.

By Stephanie Main

7 Ways to Relieve Muscle Soreness

Don't let a stiff back keep you from your daily routine. Nourish your body back to health with these seven tips.

By Judi Sheppard Missett

12 Types of People You See at the Gym

There are many stereotypical gym-goers out there, but some are more prevalent than others. Here are 12 you probably see often.

By Hunter Hewitt

  • 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
  • Advertise With Us
  • Registration Software
  • Social Media Guidelines
  • Community Policies
  • Cookies Settings
  • ©2026Active Network, LLC and/or its affiliates and licensors. All rights reserved.