20 kilos is 44 pounds. 60 days is is 8.5 weeks. That's 44/8.5 = just over 5lb of weight loss targeted for each week. Now that I've double checked my math and

20 kilos is 44 pounds. 60 days is is 8.5 weeks. That's 44/8.5 = just over 5lb of weight loss targeted for each week. Now that I've double checked my math and seen that the number I got before I started writing this comment was correct, I can tell you (or, your friend since it's not your website) that unless you are severely obese, this is a terrible terrible idea and an unreachable goal unless you want to get very sick. Before I get into the numbers I think you should go by, let me give some information: I recently moved the entire width of the United States and started working as a software engineer at a fitness company, I've gotten really into the science behind weight loss and weight training and have gotten much stronger than I used to be while also losing 30+ pounds in three months. From the numerous papers I've read and the experiences of the tons of people on our social network who have changed their life around completely, I can tell you that attempting to lose more than 2 pounds (around 1 kilo) a week is a terrible goal. Even if you hit it, you'll be severely underfed and feel like shit. For your first week or two you might lose much more than that because of water weight which might make you think I'm wrong, but you shouldn't be setting insane goals like this for yourself because they'll hurt you both physically and emotionally if you follow through. Weight loss is nothing but calories in - calories out, and making that a net negative. Use this calculator to calculate your TDEE http://www.1percentedge.com/ifcalc/ http://www.1percentedge.com/ifcalc/ (on page 2) and then count your calories and eat 500-1000 calories less than a day. Eating at a deficit of 1000 calories is really drastic and I can't maintain it on most days, so try to aim for somewhere between 500-750. A pound is 3500 calories so being at a daily deficit of 500 calories will net you one pound of weight loss a week. If you're feeling adventurous, go to the next page in that calculator and follow its intermittent fasting macro calculations (which will make you count your fat, protein, and carbs rather than just your calories) and incorporate a simple three times a week weight-training routine. That will help you emotionally because you'll be able to eat more on workout days and also make you stronger, and convert some of your fat into muscle.