Your Rotator Cuff Is Not A Cuff
Written by Calvin Sun

There’s no shortage of misconceptions and misinformation in the realm of health, fitness, and nutrition. One of the most common anatomical misconceptions, for both the layperson and the novice coach, is regarding the famed rotator cuff. I often hear complaints about rotator cuff pain despite the pain being in an anatomically implausible location or self-diagnosed rotator cuff “tears” that miraculously heal in a few days. Most people have no idea what or where their rotator cuff is, nor its actual function. In today’s post,

5 Ways To Mentally Prepare Before a Competition
(Originally published May 18, 2016)
Written by Calvin Sun

As a competitive athlete, your preparation for game day goes far beyond what you do in the gym. While physical training is certainly critical, mental preparation is equally essential to your success. U.S. Marine Corps General James Mattis said, “The most important six inches on the battlefield is between your ears”. Most coaches at Invictus will tell you that this statement holds equally true for athletes who wish to step onto the arena floor. In this post,

10 Healthy Holiday Gift Ideas
Written by Calvin Sun

The holiday season is upon us and we thought it might be helpful to provide a few gift-giving ideas for the fitness fanatic in your life. Whether you’re shopping for yourself, your training partner, or a loved one, here are a few ideas for the health-conscious, performance-minded folks in your life.

1. Headspace Subscription

Meditation has a variety of scientifically-proven benefits including improved focus, attention, ability to work under stress, and mental resilience. I personally used Headspace to get started with meditation a few years ago and I still recommend it to my clients and athletes who want an easy and accessible method of learning mindfulness-based meditation.

10 Healthy Holiday Gift Ideas
Written by Calvin Sun

The holiday season is upon us and we thought it might be helpful to provide a few gift-giving ideas for the fitness fanatic in your life. Whether you’re shopping for yourself, your training partner, or a loved one, here are a few ideas for the health-conscious, performance-minded folks in your life.

1. Headspace Subscription

Meditation has a variety of scientifically-proven benefits including improved focus, attention, ability to work under stress, and mental resilience. I personally used Headspace to get started with meditation a few years ago and I still recommend it to my clients and athletes who want an easy and accessible method of learning mindfulness-based meditation.


The Hangover
(Originally Published January 8, 2012)
Written by Calvin Sun

Hangovers are a common occurrence this time of year (or really anytime for that matter in this economy), so I think it might be worth discussing the physiological causes of this condition. Alcohol consumption causes several things to happen in your body that inevitably lead to the unpleasant headache and fatigue associated with the morning after drinking.

Antidiuretic Hormone Inhibition

Alcohol enters your bloodstream, it prevents antidiuretic hormone (ADH) from being released.