why practice yoga?

Between physical, mental, and emotional aspects, a wide array of benefits stem from a regular yoga practice, and you can experience a lasting impact.
One reason yoga is appropriate for so many different people is its ability to create balance:

the weak become toned
the strong become flexible
the flexible become stable
the stiff become softened
the uncoordinated become graceful

the disoriented gain focus
the critical gain acceptance
the unrestrained gain self-discipline
the meek gain assertion
the lethargic gain energy

the strain finds breath
the insomniac finds rest
the stress finds relief
the conflict finds peace
the apathetic finds passion

Outside sources

These links provide more in depth information on why yoga might be right for you:
Dr. Timothy McCall explains the healing effects of yoga in this article from Yoga Journal.
This site explains why the Mayo Clinic also recommends yoga for fitness, health, and stress reduction.
A Harvard study is researching the biological results meditation has on stress.

Inside Sources

People may tell you many different reasons they practice yoga, but the only way to know is to experience the benefits yourself.