When it comes to improving your health, making changes to what you eat can have a huge impact. When time is limited, recipe boxes and meal delivery services can go a long way in kickstarting and supporting new nutrition habits.

A much more nutritious alternative to your standard takeaway, I often will recommend meal delivery services or recipe boxes to my clients as a sports dietitian.

Taking on an Ironman triathlon with a 3.8Km swim, 180-Km bike and 42.2Km run is no mean feat.

Energy requirements are calculated by combining resting metabolic rate (RMR) together with an activity factor which measures how active you are. The more active you are, the more energy your body requires on top of RMR. Even if you are fairly sedentary, your body will still require additional energy to walk around, sit, stand, digest food and many other things.