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Core Knowledge

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

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Top 10 Articles



Bruised Ribs: What You Need to Know

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


2. The Complete Guide to Torn Biceps

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


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. All About Pectoralis Muscle Strains

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


5. 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.


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. 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.


9. The Complete Guide to MCL Injuries

Learn how to reduce your risk for this common sports injury.


10. How to Return from a Separated Shoulder

A separated shoulder is pretty common and easy to treat without surgery. Here's how to bounce back from it.