In one study, the research team analyzed the levels of sleepiness or alertness 31 healthy people. The respondents were aged 18-65 years, not fat, and has a normal sleep pattern. The research team recorded their diet.
High-fat diets have been linked closely with our easy sleepy during the day, while the high-carbohydrate foods make us more alert. There is no link between the consumption of protein with sleepiness and alertness.
Results are not associated with the age of participants, age, body mass index, amount of sleep time, and total calorie intake.
