How did you get to be the weight you are?
It's a complicated question. Well, actually, the question is simple, it's the answer that's complicated.
Exercise plays a part. Genetics too. Overweight people tend to have overweight children. But their dogs (if they have them) tend to be overweight too, so there's more than just genetics at play here.
And of course, what you eat, & how much, is of major importance too.
Researchers at Cornell university have recently found that what other diners eat, plus their appearance, can influence what you eat as well.
http://www.lifehacker.com.au/2014/10/your-fellow-diners-appearance-may-influence-how-much-you-eat/ / obese obesity fat influence food intake marketing mindset chocolate cheesecake research researching study who you’re eating with larger than you how much food eating study Cornell University published journal Appetite 82 undergraduate students salad spaghetti lunches actress trim in shape she ate healthily more salad less pasta ate less healthily wore prosthesis appearance extra 20kg kilogram kilogramme weight wearing prosthesis researchers Mitsuru Shimizu Katie Johnson Brian Wansink overweight eating companion increased unhealthy food intake participants ate 31.6% more pasta served herself overweight companion serving herself healthily reduced healthy food intake participants actually ate 43.5% less salad study small results environment what you eat /