It usually depends on if the person actively stays hydrated. The recommended amount to drink is around 8 ounces, so depending on the size of the water bottle, it could vary.
Marathon’s consist of running/jogging/sprinting long distances, so first off it would be a good idea to increase stamina, which would be done by jogging everyday, increasing your distance everyday. Stretch your calf muscles upper leg muscles to avoid cramps while running too.
Teach them how to play soccer. give them a few polite tips, but never make them feel inferior
The benefits of medicines are the helpful effects you get when you use them, such as lowering blood pressure, curing infection, or relieving pain. The risks of medicines are the chances that something unwanted or unexpected could happen to you when you use them