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Whether you want to lean out, build muscle or break a personal record, tweaking your macronutrient ratios can give you the edge you want.

Boost endurance, enhance fat loss and kick plateaus to the curb with these techniques for intensifying your resistance workouts.

Go round for round to burn calories and body fat with this super-efficient 25-minute fighter’s routine.

With a simple resistance band and the power of pulse reps, you can do this anywhere, anytime lower-body-sculpting workout.

At home, the gym or the park, you can define and improve your biceps and triceps fast with this 20-minute routine.

If you want to improve your lifting potential, prevent injury and tie together your physique, it’s time to accessorize.

Get your stretch on and open up those tight hips with this 15-minute lower-body flexibility circuit from personal trainer and computer programmer Kelly Von Schleis.

Fix what’s ailing your progress with a head-to-toe routine centered around this one piece of equipment.

Adjusting your fitness routine to match each phase can prove beneficial for your mind and body.

Will this dietary approach help or hinder your goals? The answer may depend on your personality.

The Under Armour HOVR Machina 3 is made for the high mileage runner looking to finish strong

This lower-body routine borrows the best tips and tricks of the world’s top bodybuilders for fast-track results — without the extreme muscle growth.

Cast your vote and help us select our Oxygen Challenge 8 overall winner!

Squeeze every last benefit out of your favorite machine-based exercises with these five tips.

We’ve packed your weekly meals with plenty of antioxidant-rich veggies as well as protein and healthy fats to crank up your energy to do the things you love.

Check out Nicole Clancy's author page.

Keeping your skin safe from the sun should be a top priority while you get your sweat on.

Reduce inflammation and improve flexibility with these 8 foam-roller exercises for women.

Mounting evidence suggests that women respond differently to endurance training after menopause. Could donating blood be the solution?

As the weather heats up, make sure you’re giving your body the hydration it needs to perform its best.

Joint health is a cornerstone of staying active as you age. Not sure how to work on it? Start with these seven expert tips.

No matter how experienced you are with swimming as cross-training, you can always get better—and these workouts can help.

Nourish your muscles with these go-to snack options.

Build muscle and stay lean with this four-week meal plan.

If you’ve struggled to build abs with crunches and planks, compound movements might be the key to unlocking your full six-pack potential.

These barbell moves are just what your training arsenal needs — just make sure you're doing them properly.

With the UA Flow Synchronicity, Under Armour delivers a running shoe designed to fit and support the natural shape of a woman’s foot so women can run even faster

Maximize your time at the gym by switching to a push-and-pull split.

Not in the habit of planning ahead? That may be a recipe for disaster when it comes to your nutrition goals. Learn the benefits of meal prep and expert tips for making the process even easier.

Sculpt your biceps and triceps in just 20 minutes with this superset workout.

Keep your training tools to a minimum while maximizing your results with this leg-focused kettlebell workout from Miami-based trainer Jacqueline Kasen.

After becoming the youngest adult to run 100 marathons, she’s chasing even bigger running goals and helping fellow Dreamers and young women realize their own potential

Burn fat and power up your cardio fitness fast with this Tabata-style high-intensity interval training workout.

These next-level grilled salads will get you all fired up for mealtime.

Train mobility and balance at the same time with these multifunctional moves.

Adding a cup of true tea to your diet can have a positive effect on your health.

Step away from the sandcastle — and build your body instead.

Don't let aches and pains limit you.

The next time you’re craving something crunchy, sweet, or filling, try munching on these snack picks.

Find out which situations experts say warrant the OK to skip that sweat session.

Insider tips on form, function and everything to do with deadlifting.

Summer’s here — who wants to be cooped up inside? These five innovative solutions allow you to fit a great workout into less time.

Here are some of the products we've tried and loved this month.

Check out Kristan Dietz's author page.

Pimple. Blemish. Zit. Breakout. No matter how you refer to your lumps and bumps, we can all agree on one thing: Acne is the absolute pits.

We take you through some common core-training blunders and the mechanisms behind building a concrete core.

Keep your core strong and your spine safe with these training strategies.

When it comes to carb loading, what exactly does the latest science say about an age-old practice—and what are the best protocols to follow to ensure we hit the start line well-fueled?

Fire up your glutes right at home - no gym equipment needed.

Not a morning person? Not a problem. In the 5 minutes in between hitting the snooze button, you can set the tone for your entire day.

Learn how to travel-proof your body and your fitness routine with these moves.

Your dog needs exercise, so why not just work out together and keep each other accountable?

Whether you choose a studio with a classical or contemporary approach, it’s easy to see why A-listers lean on Pilates to lean out.

Plan ahead and make these healthy and hearty meals that go quickly from fridge to fork — just heat and eat!

These demanding exercises hit all your major muscle groups, training them to work in concert — improving performance in the gym or on the field.

Shape your shoulders, back, chest and arms more effectively with this simple training trick.

Use this workout to get in shape for all the hiking, climbing, paddling and rafting your wanderlust can handle.

This full-body dumbbell-only workout is fast and furious.

Relive a fun activity from your youth while also torching some serious calories. Here's why you should consider jumping rope.

Aging is inevitable. But you can slow it down and approach it more gracefully than you'd ever imagined.

Count down to a better shoulder-sculpting routine with this three-step approach.

Should you cast your hooks into fish from plants? We reeled in the nutrition facts to find out if these copycats are a smart choice.

‘Pull’ out all the stops with these fitness-boosting variations on the popular sled trainer.

Forget having to learn a separate sequence for warm-up, cool-down, or recovery. These 8 poses targeting runners’ most-used muscles will help keep your body happy and injury-free.

This popular supplement is a hit with men, but it can be even more beneficial to women. See what the science reveals about the benefits and effects of creatine.

These five rowing machine cardio workouts will help you work your way to a leaner, fitter body fast.

Don't skip your cool-down; make it your own with these tips.

Hip openers are among the most requested poses for a reason. And wherever you're at in your practice, there's one for you.

Experts share some of the key do’s and don’ts of scheduling your heart-pumping workouts.

Develop better pecs from every angle with this easy and effective training technique.

Take fitness to go with this one-month training plan to get out of the gym and into the best shape of your life.

Take the “routine” out of your training with these five expert tips.

The tips you need to get your day off to a better start.

Either add these killer moves to any workout or follow the five sample workout programs to get your body in shape for the summer.

If you regularly reach for seed oils like canola oil, sesame oil or grapeseed oil when cooking — or buy packaged foods that contain them — listen up.

Poor posture? This one's for you.

Runners, bank these at-home strength-training exercises for when you can't get to the gym.

Studies conclude compression clothes may not be all they're cracked up to be.

Everybody’s talking about inflammation these days. Learn where it’s coming from and how it impacts your health.

Wellness coach, psychologist and social media jump rope queen Janine Delaney shares her favorite way to train.