Worst running form mistakes

Brandon Laan writes:
Are you making one of the following running form mistakes? There is a lot of chatter surrounding proper running form in today's running world, which makes it very difficult to discern which approach is appropriate or suitable for you.

Michael Zazzali writes:
What is the best way to run to your fastest while simultaneously putting you at limited possible risk of injury? It has been a hot topic of debate. At the forefront of current research are efforts to discern what the primary biomechanical factors are that can and should be changed to achieve optimal performance and minimal injury.

Amby Burfoot writes:
Harvard evolutionary biologist and running-form expert Daniel Lieberman doesn't mess around when it comes to studying the most fascinating running cultures. Several years ago he published a widely-heralded paper about the forefoot-strike employed by many Kenyan runners. Now he has reported from Mexico's vast Copper Canyon where the fabled Tarahumara Indians live and run.

Nate Helming writes:
You might love running, or (ahem), at times you might hate it, but either way chances are you want to run faster and with better form.

Jeff Gaudette writes:
Are you confused by all the conflicting information about what proper running form really is? Tired of sorting through the hype and one-size-fits-all approach of marketed running styles? The truth is, there is no single best way to run. Actually, let me rephrase that.