When people talk about marathons, the images that often come to mind are of the runners sweating profusely and gritting their teeth on the track.

Many people believe that the scariest enemy of a marathon is physical exhaustion, the last few kilometers being as heavy as lead, with each step like climbing an insurmountable mountain.

Precision Investment Casting

However, if you are a true runner or have had the experience of running a marathon, you will find that what is even more frustrating than physical exhaustion is the feeling of powerlessness due to lack of preparation.

.