When fit guys do intense circuit workouts, their bodies burn way more carbs during the workout compared to when they do steady, moderate exercise — like 33 vs 13 carbs per minute for every kilo they weigh.

After tough workouts like sprint intervals or fast-paced circuit training, fit guys burn more carbs in the hour after exercise compared to easier, steady workouts — which might mean their bodies are working harder to refill energy stores.

When doing a high-intensity workout on a hydraulic machine, your body burns more sugar (carbs) for energy than when you lift weights, run, or bike at the same time.

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.

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.

Lifting heavier weights doesn’t necessarily burn more sugar in your muscles—it might actually burn less, possibly because you can’t do as many reps.