[watwut]

The worst thing you can do is to focus on calories only. That is the worst advice out there and you get it from everywhere.

YoYo effect guaranteed, cravings guaranteed, lesser ability to focus at work guaranteed and so on and so forth. And you will be miserable and won't keep it long term.

You don't just loose fat when you exercise, you build muscles, your cardio system is getting better etc etc. The way people here talk about it all sounds as if they would be putting on makeup - there is more to health and performance (including mental) then just how quick you lost few kilo.