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 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 a tough leg workout, drinking a sugary sports drink instead of water helps your muscles refill their energy stores faster, so you recover better after six hours.

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.

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.

After a short, super-hard workout, your muscles refill their energy stores way faster than after a long, slow one—even if you eat the same amount of carbs.