The thing I find so amusing about these high-protein/low-protein arguments is that people mention "high fat" without ever explaining what that means...
Most armchair-expert bodybuilders (candidizzle, Adonis etc etc) can quote you chapter and verse on the benefits and drawbacks of every conceivable carb source and all known proteins, yet nowhere do I see any discussion of fat/lipid sources.
From my own experience I have found that the three macronutients can be somewhat successfully decoupled from each other. You can (to some extent) treat carbs proteins and fats as separate requirements... once quality protein is eaten in excess in conjunction with quality fats/lipids in excess then it is actually possible to restrict carbs sufficiently to cause a loss of bodyfat without hindering muscle growth.
I've repeatedly seen natural bodybuilders lose fat while simultaneously gaining muscle by doing just that... eating good quality proteins and balanced quality fats in excess while strictly rationing carbohydrates.
Calorie totals aren't really as important as macronutrient profiles beyond a certain point as there is a huge difference between the efficiency of a high carb metabolism versus that of a high protein/fat metabolism.
The Luke
pseudo bullshit. for sure the calorie is a calorie argument isnt 100% true , but its valid to a large extent. and you wont be losing fat and gaining muscle unless you are a complete newbie (can be done for a short time period sometimes) and/or on drugs. of course it depends on what you call simultaneously ; as you can cycle your calories in various ways...but strictly speaking you wont be gaining muscle and losing fat at the same time. (even tho is theoretically possible).
the really high protien diets are only suitable for aas users, due to the systematically upgraded protien synthesis. for a natural id recommend 1 g protein/lbs bw/day..... up to 1.5...(on some diets).
wanna gain muscle? workout 3-4 days a week. focus on getting stronger. eat 1 g p/lbs bw/day...make sure you have a caloric surplus of 300-500 calories per day (and on average if you cycling your calories). other than that the exact macronutrient profile doesnt matter that much. dont be a fool and exclude carbs tho...as they fuel your workouts.
lets say your maintenance level is 3000 calories. your bw is 200 lbs.
eat 200g protein and a total of 3300-3500 calories per day or so. after that :the exact amounts of fats vs carbs arent that important as long as you get enough carbs to fuel your workouts. the carb vs fat ratio..depends on the individual. but in general dont matter that much unless you go to unecessary extremes.
( i have seen some idiots recommend bulking keto style...

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problem with bodybuilders is that they take everything to the extreme: no fat or no carb, extreme protein etc etc etc.
i also suspect many who do DC training are overestemating their gains..and they are counting fat gain as muscle gain. sometimes because they so badly want it to be muscle and/or because they are in the "fat hiding interval"= 13-16%....a fat% interval where many people really dont notice they are gaining fat and think its all muscle...but bam..when they get up to 17-18%..they notice that alot more of the weight gain was in reality fat than they first believed.
and no im not saying DC training is a bad system. obviously worked on alot of people or it wouldnt be as talked about as it still is.