• 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 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

How to Stay Hydrated While Cycling

Drinking on the bike is a legal performance enhancement

By Greg Kaplan

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 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

Latest

6 Tips to Reset Your Fitness Journey

Feeling slugglish, unmotivated or inconsistent with your fitness routine? Reset your path towards success with these simple steps.

By Stephanie Smith

Update Your Fitness Gear with This Essential List

The end of summer is the perfect time to take inventory of your fitness gear and refresh necessities for a strong fall and winter.

By Jennifer Fox

Tone and Tighten With These Arm and Ab Exercises

Ready to see more tone and definition in your biceps, triceps, obliques and abs? We rounded up the best exercises to help you tighten up.

By Sara Lindberg

9 Healthy Alternatives for Tailgating Season

A few simple swaps can make your tailgate dining less of a greasy gut bomb without sacrificing the yummy flavors of your favorite football snacks.

By Jennifer Fox

10 Realistic Ways to Stay Healthy and Feel Your Best on Vacation

Say no to desserts? Hit the hotel gym every morning? We have a better way.

By Jackie Veling

10 Plant-Based, Protein-Packed Recipes to Build Lean Muscle

Want to eat less meat but also build muscle? That's where these delicious recipes come in.

By Jackie Veling

10 Meal Prep Recipes for a Super Healthy Week

Pick a few of these recipes to prep on Sunday, and you'll be all set for the week ahead!

By Jackie Veling

8 Tips for Parents Ready to Get Back into a Fitness Routine After a Lapse

Parents at all stages often find themselves slacking on a fitness routine and unsure how to dive back in, but these tips can help.

By Sara Lindberg

  • 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.