Teen violence in a relationship can show up in many ways. Someone in the relationship may try to control the other person by what they wear, when they go out, who they talk to. Violence can also be shown by physical violence to the other person in the relationship. And since it is with teens the person being abused may not always try to get out of the relationship or think it is "normal".
Yes. Your body requires water to dilute the sugars ingested in the the drinks. In a hot environment your body would also need to sweat. So adding high sugar drinks puts pressure on your body and you can become dehydrated.