The fundamental five is a Running specific series of exercises aimed at improving your postural stability.
Start with 5 repetitions (and build to 15). Focus on smooth, fluid motions between all the positions. These movements are an excellent foundation for runners of any level and can help prepare you to keep great posture while running as well as lifting weights.
**Remember to keep your spine tall in all the movements and your arms in a relaxed and natural running posture.**