Norwich City's star Caleb Richards has launched an e-book called "The Transition – An Athlete's Guide To A Meat-Free Diet."
In his book, the footballer is giving tips and sharing recipes to those who want to increase their athletic ability while following a plant-based diet.
Richards went on a vegan diet after watching the Game Changers, the Netflix documentary on plant-based athletes.
He told the New York Times: "It persuaded me slightly, but not enough to convince me that it genuinely worked." He decided to give it a try and ditched meat for two weeks.
He said: "I saw results. My recorded top speed on my GPS unit at training, increased by 0.5 metres per second, which is huge when it comes to sprinting."
"That marginal gain alone had me convinced and feeling good about what more was to come. I was consistently having days feeling at my best and as confident as ever. Was this because of my new food choices, or was it coincidence? I didn't know, but I was happy with how I felt and was willing to continue," he added.
The book is available to order online through Caleb's website.
According to the page, the book provides "valuable insight on how to transition to a meat-free diet." You can learn about the benefits of a plant-based diet and "how it can positively impact you physically".
Twenty-five per cent of the sales profits will go to the UK's National Health Service.