I just do that for one meal a day- and it has worked. And I have lost no time in the pool. I’m a faster runner (well, the real test will be when the temperatures drop a bit more, but I seem to be okay whenever there’s a dip in temps like just last week when I got a pr on a 6k run), and a faster cyclist (pr’s all over the place on the mountains with the lost weight, and on flats I just did recently, again pr’s with almost no flat work in recent months).
What’s the goal? Well, my running sucks and that’s why I started all this. But now that I’ve lost the weight, I like how I look (wearing a 34 waist for the first time in years), and I just love the improvements on the mountains when cycling. No going back for me.
So it’s just one meal a day and during the week. And I still have my daily beer after work, a big breakfast (lots of carbs, actually, which I’ll try to change around now to see what happens), and a big dinner most every day. I don’t avoid carbs altogether but I definitely stuff myself with whatever meat is there and go a bit easy on the rice, bread, etc. So it’s not as bad as you make it sound! Seven kilos and now just maintaining.
BUT… having said all this, I’m willing to try a new approach to see what happens. It does kind of suck being hungry for those few hours every day.