It’s the sharp increase of serum insulin paired with carbs and amino acids which shove it into the muscle at a far faster rate then your body normally would.
Faster doesn’t mean better tho unless your actually eating so much food your getting spill over, your body still uses the food, I’m not saying it’s completely pointless but people
Think slin is gonna ad like 10lbs of tissue on them
Yeah it might decease muscle protein breakdown a bit maybe increase amino acid uptake but in the grand scheme of things is that really doing much compared to the grams of anabolics they’re taking
The only time I’d use it is on a high day with a fuck ton of carbs I’d use a small about just to prevent spill over and even then probably don’t even need it