Running Tip #8. Proper form results in efficient running and faster times. Rather than fixing everything, work on each of these separately:
Torso: Shoulders back & relaxed, arms swinging toward center from closer to waist position than chest, elbows creating 75-90 degree angle, very slight forward lean
Foot strike: Feet strike under your knee. Aim for mid-foot strike vs. toe or heel, landing on balls of feet is good if you've built up the foot strength.
Stride rate: Avoid long, loopy strides and increase your turnover, targeting 180 steps/min. Speed = stride rate x stride length. Higher cadence will naturally help your foot strike too.