Well, it's something I've already realised for some time, because as you know, I used to exercise quite a bit. But funny, I lose weight at the same rate even though I exercise much less now. There are tricks to attain that, of course. If I wanted to lose all the weight I've put on since my last post on losing too much weight, I probably could within a week and achieve the gaunt look.
Having an eating disorder for more than 10 years has helped me understand the way my body metabolises calories. Everyone burns energy differently, so what works for me may not work for others. Only tip I can offer is to understand your own body. Not asking people to go get an eating disorder. Just saying, go try out different methods of losing weight until you find one that works. I think the only reason why I still have muscles even though I don't workout as much as before is because I spent 5 years doing nothing but building them, and they should probably stay for quite some time. Oh and being anxious all the time does help, a lot, but yea I wouldn't recommend gettin panic attacks. I fidget a lot too, and my muscles are tense quite so often. I guess that contributes to higher metabolism. Wearing heels helps me improve my posture and requires extra energy to balance. Other than that, I sit a lot and sleep a lot. So well, yea look out for stuff that helps you understand the way your body uses up energy. That would help you know your own body better.
Most importantly, as long as you don't take up 2/3 of the couch space, you don't have to fret, because seriously, guys don't freaking care if you think you look fat or not, just as long as you're confident and natural. "Aesthetic enhancements" do not help you get the good guys. But if it's assholes you're going for, then I say go ahead.
Oooh and you know what's the best way to burn calories? One word: orgasms. I'm just saying. :)