Rehydrating your body can take anywhere from a few minutes to a few hours depending on the size of the person, the amount of water they consume, the temperature of the water, and the level of dehydration.
If a person is mildly dehydrated, they can usually rehydrate with a few glasses of water in a short amount of time. For instance, if a person has been sweating or exercising for a few hours and needs to replenish some fluids, they can drink a few glasses of water to restore their hydration levels. This process should take no more than fifteen to twenty minutes to complete.
However, if a person is severely dehydrated, it can take much longer to rehydrate. Severe dehydration can occur from vomiting or diarrhea, or from a lack of fluids over an extended period of time. In this case, it may take several hours of drinking fluids to restore hydration levels. It is also important to note that drinking too much fluid at once can be dangerous, so it is important to take breaks and spread out the rehydration process over several hours.
In addition, the temperature of the fluids consumed can also affect how quickly a person can rehydrate. Warm fluids often get absorbed faster than cold fluids, so drinking a warm beverage like tea or soup can help speed up the process.
Overall, it can take anywhere from a few minutes to a few hours to properly rehydrate, depending on the level of dehydration and the temperature of the fluids consumed.