If you're trying to lose weight, it might be time to keep a notebook and pen handy.
Some participants were also instructed to keep food diaries to record how much food they ate every day. “Hands down, the most successful weight-loss method was keeping a record of what you eat,” said senior researcher Victor Stevens (Gupta, 2008).
What they're eating
How much they're eating
Which foods are contributing the most to conditions such as obesity