I don't do push-ups, and my diet is bad. On an average day I only eat once per day, but I stuff myself until it's lunch time the next day.
I eat burritos, bacon, soda, eggs, beer, korean BBQ, and everything else that is bad for you (not fast food for some reason??). It works for me. (My lady is very good with nutrition, I avoid it!)
I'm the heaviest I've ever been at the moment (165#) I drink tons of beer. To counter act the fating effects of my lifestyle, I ride my bicycle everywhere. I average over 100 miles a week on a fixed gear, that's just commuting to work and back.....
On the weekends I'll ride over 100 miles on a fully loaded bike (over 100#'s) for fun, from Los Angeles to San Diego about 140 miles non stop, or up the PCH to the next county (Ventura?) to camp by the ocean. It's nice to escape the city, and you can meet cool people.
I've been trying to eat more "vegan" but it has not been working to my advantage.
As a guess-tamate I burn 10,000 + calories a day, eat 1,000 to 2,000 and drink 9,000.
Gas is cheap at the moment (in North America) but I would suggest getting a bicycle and ridding it.
In the true DIY spirit, I have started to build lugged steel bicycle frames, as well as MIG welding kiddie bikes together to make "freak bikes"