Rehydration - UFC/MMA
In the UFC, rehydration is a science in its own right, meticulously planned by the fighter's nutrition team. Immediately after the weigh-in, a precise protocol begins: starting with small amounts of electrolyte solutions and water, then adding easily digestible carbohydrates, and finally complete meals. The goal is to restore hydration levels and muscle glycogen stores without causing gastrointestinal issues. Effective rehydration allows the fighter to enter the fight significantly heavier than their weigh-in weight, gaining a size advantage over an opponent who rehydrates less. The UFC has introduced same-day weigh-ins at some events to limit excessive rehydration and protect the fighters' health.
Rehydration
Paulo Costa is known for his massive rehydrations. In the middleweight division (84 kg at weigh-in), Costa would show up to the fight weighing over 96 kg, gaining a huge physical advantage over his opponents. This extreme approach has sparked debates about the need to limit rehydration.
Rehydration & Weight cut
Rehydration and weight cut are two sides of the same coin. The weight cut is the weight loss before the weigh-in, while rehydration is the recovery afterward. An excessive weight cut makes rehydration more difficult and can compromise performance in the fight. Weight cut.
FAQ - Rehydration
How much weight do fighters regain after the weigh-in?
On average, fighters regain between 5 and 15 kg in the 24 hours between the weigh-in and the fight. Some fighters manage to recover even 15-18 kg, showing up to the match much heavier than the weight limit.
Does the UFC limit rehydration?
The UFC is gradually introducing same-day weigh-ins to monitor how much weight fighters regain. Some athletic commissions have proposed maximum rehydration limits for safety.
