How about a Banana:
Try eating a Banana right before/during exercise.
Bananas have potassium and calcium, which increase muscle contraction and allow you to work harder/lift more.
Research has proven that just two bananas provide enough energy for a strenuous 90-minute workout. No wonder the banana is the number one fruit with the world's leading athletes.
Bananas also relieve cramps and will help you to be less sore. If you eat a small amount of parsley (yes parsley, the little green leaf) before your workout, it will aid in your potassium absorption ability, giving you am even better workout!
When you compare it to an apple, it has four times the protein, twice the carbohydrate, three times the phosphorus, five times the vitamin A and iron, and twice the other vitamins and minerals. It is also rich in potassium and is one of the best value foods around.
"If you like to go for long runs"
Before you start eat some Blackberries!
This wonderful fruit not only has very powerful health benefits through its antioxidant content, it also promotes oxygen in the body.
When running, you need oxygen, and wouldn't it be great if your body didn't get tired/inflamed halfway? I think so.
Blackberries are great for you, and great for improving your workouts!