That is a good video but i have a different take on the overweight thing. In my case i was pretty fit, army career, went to the gym nights, ran on weekends, etc. Then i went the gulf war (with about 100,000 other people), got sick, tired, joint pain, gained around 20 lbs, but the army kept more off, until i couldn't run any more. Then i got lyme disease and gained another 20 lbs, just couldn't exercise or go to the field. A few years later i had some bad dental work now lodged way up in my gums and my weight shot up over 200, crippling headaches, etc.
Last year i tried the green juice diet, wife got a juicer she loves it. I lost 20 lbs in a month, then stalled out, couple weeks later i got real bad headaches had to go back to solid food. Got kind of starved and gained it all back plus a little more.
Year before that i ate raw fruit & vegetables, and juice, for 4 months, same story, stalled at 20lbs off then started feeling terrible so gained it all back with a worse diet than before.
Now i'm just sticking to healthy foods, nothing fried, no sugar, etc, lots of veggies, mostly organic/no gmo. I can ride a trike with an electric motor and sweat over my tractors 8 months out of the year, winters i go to the sauna cross country ski in the yard. I'm stuck at 220 but my bloodwork is good and i feel ok most days.
My point is not everyone can just go on a crash diet or new exercise plan and drop the weight. Some people can and that's great but not every body is the same, maybe genetic, maybe illnes, injury, etc. Sure some fat people might just be lazy but not everybody. See a lot of hate for fat people but i try not to judge until i hear the guy's story, including my own good luck