According to research, swimmers who encounter significant nervous system activity likely to perform badly. Energy drinks contain substances that can increase heart rate and blood pressure when used improperly, which could cause you to fail a test or worse. Energy drinks are also very stimulants, so they should be avoided by athletes who want to stay focused and relaxed. The best energy for swimmers is food. Eating a nutritious meal before a race will give you the energy you need to compete at your best. Drinking alcohol or using drugs to feel better is not recommended because it can affect your judgment while swimming. Also, these actions may lead to injuries occurring due to excessive stress on the body. People often think of caffeine as being dangerous for children, adults, and animals, but this is not true. Caffeine is actually good for you in small amounts. It can help reduce pain and fever while improving concentration and memory. There is some evidence suggesting that caffeine may also have positive effects on the lungs and heart. However, too much caffeine can be harmful to your health. It can cause irritability, anxiety, insomnia, diarrhea, nausea, and headaches. It is best not to consume more than 300 milligrams of caffeine per day if you do not want to experience any negative effects.