The leading performance nutritionist - James Collins, talks about the importance of energy intake during exercise and reveals an experiment he has done with military soldiers.
The daily consumption of fruits and vegetables increased dilation of the blood vessels, which is potentially improving the function of the body's vascular system.
A leading expert in Sport & Exercise Nutrition. He is Head Nutritionist for Arsenal Football Club, and was also heavily involved in advising Team GB Olympic teams and individuals in the run up to the London 2012 Olympic Games, and now towards Rio 2016.