Whether you do heavy or light weights before cycling, your body still burns the same amount of carbs during the bike ride.

Doing a tough weight workout before jogging or cycling helps your body burn more fat while you're doing the cardio.

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.

When endurance athletes eat a high-fat diet for 6 days, their bodies burn less carbs during a long bike ride compared to when they eat a high-carb diet — showing their metabolism switches to using more fat for fuel.

After eating, when adults go for a moderate workout, their bodies burn more carbs over the next 24 hours but don’t burn any more fat — meaning meals push the body to use carbs for energy instead of fat, even with exercise.

Scientists thought your body mostly burns fat at rest and during easy exercise, but new measurements show your body actually burns a lot of carbohydrate too - around 40-60% of the energy you use.