Eating a lot of carbs for a few days before a workout won’t make you stronger — even if you eat way more calories than usual. Your body can refill its energy stores just fine without extra carbs.

Eating carbs before a normal weight workout doesn’t make you stronger or let you do more reps, unless you’re training super hard with lots of sets or haven’t eaten all day.

Eating carbs before or during a normal weightlifting session doesn't make you stronger or let you lift more reps, as long as you've eaten recently and aren't doing super long workouts.

If you’re doing a ton of sets for one muscle group (like 12+ sets of squats) or training twice in one day, eating more carbs might help you push harder — otherwise, it doesn’t matter much.

Whether you eat a lot of carbs or very few for months, your strength and muscle growth won’t change — as long as you’re eating enough total calories and protein.

Whether you eat a lot of carbs or very few, as long as you’re eating the same total calories and protein, you’ll gain the same amount of strength and muscle over several months of weightlifting.