Why start training?  More like why not start?  

What are your reasons for not committing to your health? 

Maybe you feel it's too expensive, you don't have time, it's too hard, you don't have a good support group.  But in reality, there are so many free options out there such as youtube, instagram, facebook, etc.... Plus a walk or run or body weight workouts are totally free and doable anywhere.  

Just start moving no matter what it is and stick with it, make attainable goals and small changes overtime.  Most of all be patient, results will come over time it may take weeks or months to really see a change but stick with it!