Lennar Zinn

About the Author

Lennar Zinn is a renowned author and cycling expert whose work bridges the worlds of endurance sports and medical science, offering vital insights into the hidden risks of athletic overexertion. With a background in both journalism and physiology, Zinn has dedicated his career to educating athletes on optimizing performance while safeguarding their health. His seminal book, The Haywire Heart: How too much exercise can kill you, and what you can do to protect your heart, draws from extensive research and personal anecdotes to reveal how intense training can lead to cardiac issues, providing practical strategies for prevention and recovery. Zinn's accessible prose empowers readers—from professional cyclists to weekend warriors—to train smarter and live longer, making complex health topics engaging and actionable.