I read a beautiful article today by yogi Julia Lee.  About explaining what yoga is:

“People come together in class not only to practice physical poses, but also to acknowledge the divine in all of us. When we move and breathe together, we are moving and breathing not only in service of our selves, but also in service of something greater: humanity. We recognize that we share more commonalities than we do differences; that really, despite our age, gender, sexual orientation, belief system, or economic status, it’s all about just being good, kind, happy people.

Yes, Julia, that is it.  I practice and then I feel better.  By feeling better I can be kinder to others and more upbeat.  And hopefully this generates ripples, helping someone else out, and onward.