To boost performance, swimmers must consider every option available to them including what they eat. A healthy diet supplies the body with the vitamins, minerals, and calories it needs to function at peak levels. Swimmers who ignore the importance of sound nutrition undercut their ability to perform at peak capacity. Aside from supplying vital vitamins, minerals, and calories – a healthy diet increases strength levels, reduces fat levels, improves hydration, builds a stronger immune system, increases energy levels, and improves mental alertness.