hi, is it true that running at night (up to individual limit) before sleep is not good for health?

is calorie computation (intake and usage) is really that straightforward? losing 1kg weight for every 7700 deficit of calories.

is it really dangerous to take really low calories (let say 700-1000cl) per day while use about 2500-3000cl on the same day? I've been doing it for the last couple of days. It wont be for long, I plan to practice it for 1-2 weeks if possible. Is it doable?

3. yes, short term target. Not much left to be remove from my body. Just another 3kg from my trunk. haha. but I suffer a lot from food teasing. lol