Clients with which condition should avoid high-intensity training in cold, dry environments?

Clients with asthma should avoid high-intensity training in cold, dry environments due to the potential for exercise-induced bronchoconstriction. Cold air can irritate the airways, leading to symptoms such as wheezing, coughing, and shortness of breath. For individuals with asthma, this type of environment may exacerbate their condition, making it harder to breathe during strenuous activities. It's important for those with asthma to participate in exercises that allow for better control over their breathing, and to choose environments that are less likely to trigger an asthma attack.

In contrast, while chronic fatigue syndrome, diabetes, and hypertension can present their own considerations for exercise, they do not have the same direct and immediate risk associated with cold air. For instance, individuals with chronic fatigue syndrome may need to manage energy levels, those with diabetes have to monitor blood sugar, and hypertension involves managing exertion levels and blood pressure response, but these conditions do not inherently exacerbate respiratory issues triggered by cold, dry air like asthma does.