The energy demands of triathlon training, particularly when training toward Ironman or Ironman 70.3 are quite substantial.
Athletes who are not used to a structured nutrition plan, may be surprised about just how much energy is required to train day in, day out for six months or more.
Some GI tri 1-1 coaching plans include an estimation of your Resting Metabolic Rate (RMR) and a periodized forecast of your Total Daily Energy Expenditure (TDEE) based on your anticipated activity level throughout the training plan.
Depending upon the athlete's bodyweight goals (to gain, maintain or lose body mass) a target daily energy intake can be established. Tracking food consumption, current body weight and other metrics such as resting heart rate and qualitative measures, can indicate whether the athlete has the right amount of energy to train at the prescribed volume and intensity.