Anita Bean, sports nutritionist and author of The Complete Guide to Sports Nutrition, believes that anyone can modify their diet plans to boost their performance.
She told the Daily Express: "Many people think sports nutrition is something that's just for dedicated athletes, but even beginners and keen amateurs can eat and drink in a way that improves results and builds motivation."
According to Ms Bean, people who want to enhance their performance should start off by following the same dietary guidelines as everyone else.
This includes eating plenty of fruit and vegetables, a range of protein foods, some low-fat dairy, and a variety of starchy, high-fibre foods.
One of the most important changes to improve exercise stamina is to eat carbohydrates, such as pasta and bread, the expert advised.
She told the news provider: "Carbohydrate is the preferred fuel for your muscles and if you try to work out without it, you'll reach exhaustion much more quickly."
NHS experts say that starchy foods - our main source of carbohydrate - should make up about a third of the food we eat.
This means people should try to include potatoes and wholegrain varieties of bread, cereals, rice or pasta in their daily diet plans.