Some locations fly flags or write remarks on chalkboards to inform swimmers of the conditions. The force of the waves might knock you down or push you to the ocean below. When the waves grow rough, stay close to an adult or get out of the water. People also get into difficulties when they begin to panic or become too fatigued to swim. The best thing to do if you are too tired to swim is to stop and rest until your energy levels return to normal. You should never continue swimming when you are too exhausted because this could be dangerous. Swimming after drinking too much alcohol or taking drugs is also unwise because you will likely feel sleepy while swimming. People sometimes have accidents when they are sleepwalking. If this happens to you, try not to worry about it; just wake up your partner or call someone for help. Sleepwalking can be dangerous if you leave your house during your sleepwalk. You might forget where you put things like the stove or fire escape and fall over them. Also, sleepwalking people often walk into roads or other dangerous places. They may even break objects in their houses while they are asleep. Anyone who knows you well will tell you if you start acting strangely during sleep. You should try not to worry about these accidents too much. Instead, focus on how you can prevent them from happening again. For example, make sure that stairs are easy to climb in your house.