Mislm, da je to joke ampak okej.
Hello, I think this is joke or something but still I'll answer you. In 4 days you'll lose 3kg really hard. It's really short time. I don't know if it'll work but you can try this:
*b*1. Don't skip meals.*b* Eat 5 times a day but normal sizes of meals for lunch, breakfast and dinner. Have a small snack between breakfast and lunch and between lunch and dinner. It can be fruit, a snack bar(if it's possible-the most healthy ones)...
*b*2. Workout.*b* You can try with workouts for losing weight. Search for different workouts on Youtube. You can find it on Pinterest too(if you have it of course). But don't overdo it. And start slowly-first day you can dob it for idk like 10 or 15 minutes and next day 5min more and you can increase this in following days.
*b*3. Drink water.*b* Water is important, okay? It can also help with losing weight(I mean I heard it can but I don't know really). Drink enough water every day. You have to be hydrated.
*b*4. Eat healthy food.*b* This should help I guess. Don't eat unhealty food too much. As I already said(well I didn't said, I wrote:sweat_smile:) -eat 5 meals a day. You can cook food at home and search for some healthy recepies online or in cookbooks. There's a lot of useful videos (recepies) on Youtube and Pinterest. Search there.

I know you wrote that you can translate but we use "slang" (I don't kniw if this is coreect in English haha) here and we don't write totally correct so you wouldn't be able to translate every single word. So I wrote in English. It's probably a lot of mistakes and I don't know if it helped but this is what I learnd from Youtube and Pinterest and maybe helps you.

(še kar ne vem kako si našla/našel to spletno stran, če si res iz tujine.)

Srečno/good luck,
#happygirl