Taking creatine for five days boosts creatine in muscles, but doesn’t change how much glycogen (energy) is used during intense cycling in healthy young guys — so more creatine alone doesn’t help save energy stores during endurance workouts if muscles weren’t already drained.

Taking creatine for 5 days doesn’t boost muscle fuel stores in healthy young guys who aren’t working out or eating extra carbs — it needs more than just the supplement to make a difference.

Creatine might help your muscles store more glycogen, but only if you first do a workout that drains your energy stores — otherwise, it doesn’t do much for glycogen.

Taking creatine supplements the way some athletes do—starting with a big dose, then switching to a smaller one—might temporarily boost the sugar stored in your muscles, but that boost fades once you switch to the smaller daily dose.

If young, healthy guys take 20 grams of creatine every day while eating a super high-carb diet after intense exercise, they rebuild their muscle fuel 82% faster in the first day compared to just eating high carbs alone.

If young, healthy guys take a lot of creatine with a high-carb diet after a tough workout, their muscles store more creatine within just a few days — and it keeps going up the longer they take it.