Knees should be under hips- not out in front.
Foot plant should be underneath your body.
You should land midsole and then roll through your toes.
Do not slap your feet.
Have Good Posture -
Just like swimming your core should be engaged. Helps maintain good posture even when tired.
No side to side body movement.
Head should be looking forward.
Keep shoulders and neck relaxed. Running tight and tense can cause injury and make running miserable.
Hands should be at waist height.
Good arm swing makes you run more efficiently and helps boost your pace- whether you are sprinting, running or slowly jogging.
Bad arm swing can cause slouching. Slouching leads to shallow breathing and can cause side stiches.
Hand should not cross the center of your body
Don't clench your fists. Pretend you are holding an egg!
Arms should be bent at an 90 degree angle.