Zinn’s Cycling Primer

ZCP_72dpi_400pw_stroke Zinn's Cycling Primer

Zinn’s Cycling Primer increases a cyclist’s knowledge of bike and body for faster and stronger riding.

E-book FAQ

VeloPress e-books

Last updated October 25, 2017 VeloPress has continually improved this e-book FAQ for several years to the point that it answers and solves nearly every customer inquiry about VeloPress e-books. Please read it first before contacting us. If you are still unable to use your e-book edition to your satisfaction, then contact our staff and we […]

The Haywire Heart

The Haywire Heart by Lennard Zinn, Dr. John Mandrola, and Chris Case

The Haywire Heart is the first book to examine heart arrhythmia in athletes.

Exercise Addiction Quiz for Athletes


Are you clinically addicted to exercise? Take this 6 question quiz to find out. The Haywire Heart offers a frank discussion of exercise addiction, which afflicts about 10% of fast runners and between 20-40% of triathletes.