Dieting results in long term changes to hormones and muscle fibers.

[nobodyspecial]

39. Or, just continue to make excuses

All up to the person who is obese. And don't tell me I don't know what I'm talking about. I've fought my genes every day of my life. It's hard at first, but once you make changes, it becomes a lifestyle, not something that you do and then stop.

I don't even get your statement. Physical activity *can* be a meaningful activity that includes fun, joy and loved ones. It doesn't have to be hours on the treadmill. What about a hike up a hill? Or a family bike ride? A run along the beach? Yoga in the park?

From the CDC:
We know 150 minutes each week sounds like a lot of time, but you don't have to do it all at once. Not only is it best to spread your activity out during the week, but you can break it up into smaller chunks of time during the day. As long as you're doing your activity at a moderate or vigorous effort for at least 10 minutes at a time.
Give it a try

Try going for a 10-minute brisk walk, 3 times a day, 5 days a week. This will give you a total of 150 minutes of moderate-intensity activity

http://www.cdc.gov/physicalactivity/everyone/guidelines/adults.html
(Lots of great tips at this link.)