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Core Knowledge

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

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All you need to know to refuel and rehydrate after your workout.


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Top 10 Articles



The Complete Guide to Torn Biceps

Learn what a torn biceps is and how to treat it.


2. Bruised Ribs: What You Need to Know

Learn how to relieve the pain and recover from bruised ribs.


3. Everything You Need to Know About Quadriceps Strains

A quadriceps strain occurs when the thigh muscles or tendons are stretched beyond their normal limits.


4. 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.


5. All About Pectoralis Muscle Strains

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


6. Romanian Deadlift - Barbell (Underhand Grip)

This strength building movement will work your glutes, hamstrings, and back.


7. 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.


8. 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.


9. 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.


10. A Better Warm-Up

Ten innovative moves to jumpstart your training session.