Eating a well-balanced diet can help you get the calories and nutrients you need to fuel your daily activities, including regular exercise. When it comes to eating foods to fuel your exercise performance, it's not as simple as choosing vegetables over doughnuts.

Botanically, fruits and vegetables are classified depending on which part of the plant they come from. A fruit develops from the flower of a plant, while the other parts of the plant are categorized as vegetables. Fruits contain seeds, while vegetables can consist of roots, stems and leaves.