Almost 8 years old and still likes to trot along as I jog 
Running Check
Things to think about:
Where do your feet hit?
Do you put more weight through one leg versus the other?
Do your arms swing equally?
Do you feel rotation through your spine/ribs?
Do you breathe with your mouth open or shut?
Tuning into your movement and recognizing imbalances is the first step to improving your running form!