All of us have a friend who eats everything and is still slim. Those people almost never do a special diet. According to researches :
29 % of them rarely measures their weight.
42 % going to gym at least 4 times per week.
7 % is vegeterian, 35 % eating salad with every meal and 33 % don't drink alcohol.
At breakfast 51 % eating fruits and vegetables, 31 % eggs, 21 % eating nuts as snack during the day.
61 % declare that their favorite meat is chicken.
80% is drinking at least 2lt of water per day.