Soylent for skinny guys


I am 5’11 and 125lbs at the age of 20. I’ve been skinny my whole life and now I am desperately trying to gain weight, so soylent caught my attention. Since I have fast metabolism normal dose wouldn’t be enough to gain anything.
My goal is to gain approximately 40lbs over 2 month I do realize it would probably be unhealthy but I really need it as long as it doesn’t have any short term side effects.
Based on calculations it takes 2800 calories for me to maintain my weight so I was wondering what can I mix silent with to have a caloric surplus that would give me the results I want?


Why do you “really need” to gain the weight you want that quickly?


I think the most common additive to Soylent is
NOW Foods Whey Protein Isolate. A standard daily amount of Soylent is 2000 calories, so you would need to add to that. There are some threads that discuss increasing the number of calories, but I don’t know where they are. I’m sure you will get other suggestions.


That is definitely an aggressive goal. But to answer your question 1.5 formula offers you more flexibility if you want to add calories. You can try mixing peanut butter, fruits, nuts, oil, etc. in a blender for a more caloric surplus (probably more tasty too).

I’m not sure if you’re already active or not, but what will help you gain weight (in a healthier fashion) is to do some moderate lifting which will help maximize your muscle gains -> more weight. This may seem counterintuitive because you’re burning calories, but this will also increase your appetite which will make you want to eat (or drink soylent) more also. A downside to this aggressive goal of gaining size or weight too fast may give you stretch marks. May be minor, but worth noting since as a skinny guy you don’t experience it often.

I was a skinny guy before (135lbs before now I’m 180lbs). Haha good luck!


I’m a hargainer too @Ben777. I recommend you focus on what you do in the gym, don’t just focus on your diet/soylent. The only time I can gain weight is when I’m hitting the weights 2 to 3 times a week, and not being very active the rest of the time. Focus on only 4 or 5 compound exercises per workout, and around 15 sets max. Don’t workout much longer than 45 minutes.

I’m also curious why you need to gain 40 pounds in two months. I think you should set more realistic goals or you’ll end up being constantly disappointed. Gain a couple pounds of muscle a month for a year straight and you’ll be looking a feeling just fine.


All good answers. I’m no authority on the subject but I’d say everyone is right so far.

Protip: you don’t have a fast metabolism. That isn’t how weight works.


C’mon, you can’t leave us hanging like that. At least give us a hint as to what to google to get a breakdown on why “fast metabolism” isn’t a thing. Or isn’t a weight thing, whichever.


Edit: I changed the link because I rage when people send me LMGTFY links. Apologies.


Besides the NOW Foods Whey Protein Isolate, some people add heavy cream, or even just milk, to add calories.


Very good point. It’s always good to have the right weight relative to other important factors.

Plantar Fasciitis Specialist


lol, I’m 19, 5’11" @ 105 lbs, same problems mate.
Did you gain the weight?