Which of the following is a precaution for a client with cardiovascular disease?

The recommendation to consume water before, during, and after exercise is crucial for clients with cardiovascular disease because proper hydration helps maintain optimal blood volume and circulation. When individuals are adequately hydrated, their heart doesn't have to work as hard to pump blood, which can be especially important for clients with existing heart conditions. Staying hydrated can also help prevent overheating and support overall cardiovascular function, making it essential for maintaining safety during physical activity.

In contrast, the other choices either encourage dangerous practices or neglect critical aspects of exercise safety for individuals with cardiovascular concerns. For instance, exercising in hot temperatures can increase stress on the cardiovascular system and elevate risks for clients with such conditions. Additionally, avoiding hydration during workouts could lead to dehydration, which can complicate cardiovascular issues and lead to serious health risks. Engaging in high-intensity resistance training may also pose risks without proper medical clearance and guidance, as it could put excessive strain on the heart. Therefore, recommending hydration is not only practical but essential for safely supporting exercise among clients with cardiovascular disease.