Puffin Everyone is different, and we live in an environment where we are constantly encouraged to eat, it's often been said that it is surprising how anyone is normal weight any more.
Most ready to eat food that you buy contains more calories than most people should be eating in a meal so anyone who eats out a lot, whether takeaways, cafes/coffee shops, bakeries, fast food or restaurants will struggle to maintain a normal weight, unless very active.
And that is just meals, even if you eat your meals at home, you are encouraged to snack while out and about. Someone mentioned on another thread that a slice of Costa carrot cake contains nearly 600 calories - plenty of people would consider coffee and cake part of a normal shopping trip.
Some people feel better when eating smaller amounts, more often. Some people eat hardly anything throughout the day and then eat a massive evening meal.
I need to eat more food earlier in the day and could never follow a 'normal' eating pattern of cereal or toast for breakfast, sandwich lunch and a 'proper' evening meal as I would be starving and miserable all day. I'm actually quite hungry now, despite having a 3 egg omelette with cheese, mushrooms and spinach for breakfast a couple of hours ago, so I will probably have some fruit soon.
For the person upthread who said we don't know what weight people are, or how much their weight varies, I am currently slightly overweight (BMI 26) so am trying to lose about a stone using SW - during my adult life my weight has varied by no more than 20 pounds and until I started SW a few weeks ago, I was the heaviest I had ever been at just over 12 stone and have now lost half a stone.