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Core Knowledge

Hundreds of comprehensive guides for improving your performance in sports and life.

Editor’s Picks

Nutrition

Good Fats Versus Bad Fats

Everything you need to know about good fats, bad fats, and how much fat you need to perform like a pro.

Training

Beginner's Guide to Movement Prep

There's a new (and better) way to warm up for exercise. It's called movement preparation, or movement prep.

Top 10 Articles

1.

Training

How to Use a Foam Roll

Everything you need to know about the foam roll.

Injury/Pain

2. How to Treat a Dislocated Kneecap

What you need to know to make a comeback from this painful sports injury.

Injury/Pain

3. All About Pectoralis Muscle Strains

What to do if you strain the muscles of your chest.

Injury/Pain

4. Everything You Need to Know About Hip Injuries

From hip flexor strains to hip pointers and hip bursitis, this primer covers them all to help you keep your hips strong and healthy.

Injury/Pain

5. The Complete Guide to Groin Strains

A groin strain or pulled groin is painful and takes time to heal. Don't make the common mistake of returning to training too quickly.

Injury/Pain

6. Beginner's Guide to Knee Pain

All you need to know to alleviate knee pain and prevent it from returning.

Workouts

7. A Better Warm-Up

Ten innovative moves to jumpstart your training session.

Training

8. How to Fix Muscle Imbalance

Balance your body and reduce your risk for injury with this helpful guide.

Nutrition

9. How to Eat Clean

Choose healthy, natural, and minimally processed foods to fuel your body. We'll show how to do it with simple tips and instructional video.

Injury/Pain

10. How to Treat Runner's Toe

Runner's toe is not a serious injury, but it can be incredibly painful. Here's what to do about it.

Athlete's Performance