Have you heard about doping violations and drug testing in athletics? Athletes must be aware of which substances are permitted and which are banned in their respective sports. Certain sports even prohibit cold and allergy medications for competitors. Investigate how substance abuse impacts an athlete's physical capabilities. Compose a minimum of five sentences describing how various drugs can affect performance.

Doping violations in athletics refer to the use of prohibited substances or methods by athletes to enhance their performance. Different drugs can impact athletes' physical capabilities in various ways:

1. Stimulants - These can increase alertness, decrease fatigue, and improve reaction times, but they may lead to heart problems or psychological dependence. 2. Anabolic steroids - They promote muscle growth and can increase strength and endurance, yet they also raise the risk of heart disease, liver damage, and endocrine system disruption. 3. Human Growth Hormone (HGH) - While it aids in muscle growth and recovery, its use can lead to abnormal bone and organ growth and contribute to diabetes. 4. Erythropoietin (EPO) - It boosts the oxygen-carrying capacity of the blood, enhancing endurance, but can increase the risk of stroke or heart attack due to thicker blood. 5. Diuretics and masking agents - These can be used to flush other drugs from the system or to quickly reduce weight, but can cause dehydration, kidney damage, and electrolyte imbalances.