5'8 160 lb male. Moderately active (Rock Climb for a few hours every other day) Walk a lot. 4500-6000 calories a day.
That's a quick way to disaster, why are you so low on calories? And how can you say it's around 1000 when you don't count?
Either you're sick and need to rest/fast with 0 calories for a short while or you need to up those calories over 3000 kcal.
No need to diagnose me, mate ;) I've been living like that for a year now. And I feel better than ever. It's just how it works for me. The less I eat, the better I feel.
When I started I've been following 80/10/10 book and eating pretty much as everyone else here. Than at some points I realised that I don't want to eat nuts and seeds and oils and other fats. Later I stopped eating salads. Than in few more months I started eating once a day. I think it was inner call, I don't really know. Now most of the days I would just eat 5-8 bananas or half watermelon on something like that. I'm pretty sure it's under 1000 calories. Because when I started on 811 I've been using cronometr and all the tools, so I have an idea of calories. And I mean I'm trying to stick with it. If I'm sitting at home on Sunday and there's nothing to do, I may it more than that, just of boredom. But I don't really like how it feels afterwards.