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Do extra calories help grow muscle faster given an otherwise fixed protein intake?

So say some individual were to theoretically eat 150g of protein every day with 200g of carbs. Would muscle gain be higher if said individual were to keep their protein intake the same but ingest, say, 400g of carbs instead? Just using arbitrary numbers here to explain my question. Thanks!

Answer

Depends on your workouts/energy output. If you’re utilizing those extra calories/macros towards heavy lifting sessions then you might. You might also put on some body fat in the process if it’s over your caloric threshold, but that’ll make it easier to cut body fat when then time comes if you’re tracking & you’ll have put on some quality muscle if you’re lifting consistently + heavy.