Under reporting (not giving a truthful account of what you’re doing) isn’t generally a conscious thing.
People aren’t consciously lying. That’s why, as coaches it can’t be addressed in an accusatory manner.
We’re dealing a lot of the time with long term behaviours and habits and one of the defining characteristics of habits is that they’re for the most part done subconsciously. Most people aren’t aware or acknowledging they’re overeating or indeed over-consuming.
One of our major roles it to create awareness of food, the portions that we consume food in and the contextual in which we’re consuming food. Even something as simple as a food log is enough to create awareness and such a hugely valuable tool for that reason.
Coaches who lack empathy or fail to address people in a considerate or understanding fashion can’t complain when food logs aren’t honest. Being judgemental about ‘why’ someone is overweight merely shows a lack of understanding or ignorance and therein no one is likely to be honest with you.
People essentially know what’s good for them and what isn’t and that they need to reduce intake to lose weight. Doing it and adhering to it is where we step in and find solutions typically to the conflicts our clients encounter.