After reading some of the posts here, now I know why I wouldn't gain weight throughout my life.

This is what I had and will be having today

Breakfast: Oatmeal with raisins+one handful of nuts, apple, orange, almond milk
Lunch: Beet root soup with ginger and few pieces of chicken, brown rice
Dinner: Random pieces of fruits (Banana, guava, watermelon, pomelo..etc), mee suah/rice noodle/pan mee with one or two veges with 2 eggs

And here I am, wondering why would people even get obesity. I am under an unhealthy weight of 41 kg, 158cm (A female) The problem lies with myself actually. Whenever I try to eat more, I get guilty and will cut down on food immediately. I avoid sugary food and fast food. It was half year ago before I had my last McD and 12 months ago for my last piece of KFC. I'm pretty good at avoiding these stuff.

I'm looking at weight gaining supplement + HIIT training + Cardio, anyone tried this combination?