This is a great article especially if you are a gentleman and on the fence about starting Yoga.  The biggest false impediment is that you are not flexible.  If this is true, then starting will only help you.  Of course, start safely in terms of the physicality, you do not want to be in pain, you want your practice to meet you where you are so that your daily life (even if you aren’t playing for the NFL) is enhanced.  Private sessions are a great way to do this.

ESPN:
http://espn.go.com/nfl/story/_/id/9581925/seattle-seahawks-use-unusual-techniques-practice-espn-magazine