I can’t say that there is science proving this, as I simply haven’t looked to see if it’s been done and certainly haven’t done any research on it myself, but it strongly seems to me that if:
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A lifter can consume a lot of carbs post-workout without getting fat, and
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The lifter has no blood sugar issues when doing so
Then it is very helpful to do so.
While I do have to take care with regard to total calories consumed per week and can’t consume any vast amount in that regard, for example I personally have no trouble handling carbs.
For example, a while back I was working on a derivative of R-ALA intended to improve its duration of action and thus, I hoped, improving its beneficial effects on insulin sensitivity and blood glucose control.
(This came to nothing because unavoidably the manufacturing process for the derivative converted some of the R form to L form, which I didn’t find acceptable, so that was that.) Anyway, wanting to do some very preliminary personal testing, first I needed to get a baseline on what my blood sugar response to carbs was.
Decided to do it with real food, breakfast foods as it happened, probably on account of time of day and I guess I probably felt like pancakes, at least going into it.
A fairly miserable experience! No matter how much pancakes and (dry) toast I ate – I don’t remember now how much I ate but it was several times what I would ordinarily voluntarily do – I just could not drive blood glucose up to any value high enough to have any use for correction from a supplement, and not any higher than on far more modest carbs.
It just didn’t work. The test would have needed someone who did not handle carbs as well.
Now while I did not like that experience, actually my preferred approach (prior to Surge Workout Fuel, which changes the formula) for a two-hour hard workout and in a bulking-but-slow-fat-gain phase was 3 sccops Surge plus about 45 g added glucose preworkout, again at the 1 hour point, and yet again post-workout,
Followed by a trip to CiCi’s pizza an hour after that, with about 5 or 6 slices (in the case of CiCi’s, the beef pizza has the best nutritional profile, by the way, being reasonable in protein relative to total calories and reasonably modest in fat, while supplying quite a bit of carbs.)
I haven’t added up how many grams of carbs that is, but it’s a lot.
Fine for me though, although it’s much more than I do when being insistent on not gaining any fat or actually dieting down.
A lot of carbs pre and post workout might be suitable for you as well.