The commercialism may wash off sometime later.
Willpower is nothing but willingness to do.
Firmness in the body leads to firmness in the nervous system.
Yoga aims for complete awareness in everything you do.
The conjunction of effort, concentration and balance in asana forces us to live intensely in the present moment, a rare experience in modern life.
Yoga allows you to find a new kind of freedom that you may not have known even existed.