In most cases, using a luxury spa hot tub when you have a cold is not a wise choice. While short, low-temperature soaks can provide some relief, if you have a fever, are dehydrated, or are weak, hot water therapy can worsen symptoms and delay recovery.

The water temperature is typically maintained at 37–40°C. Full-body immersion causes peripheral vasodilation and accelerated circulation. This not only helps with overall relaxation but also improves nasal blood flow, gradually reducing swollen mucosa and alleviating nasal congestion.

Under certain conditions, brief, mild dizziness is a normal physiological response that may occur. When you soak in a hot spa tub at a high temperature (typically 37°C to 40°C) for an extended period, your body undergoes the following changes: • Vasodilation • Drop in blood pressure • Redistribution of blood flow • Fluid loss

Yes. Soaking in a spa hot tub for two hours consecutively may offer psychological and muscular relaxation benefits, but it also carries health risks such as dehydration, dry skin, cardiovascular strain, and dizziness.

Most countries and regions have clearly defined maximum temperatures for hydrotherapy hot tubs. The U.S. Consumer Product Safety Commission (CPSC) recommends a maximum temperature of 104 degrees Fahrenheit to balance comfort and safety.

Yes, bacteria in spa hot tubs can indeed cause illness. These bacteria can enter the body through skin contact, inhalation, or mucous membrane infection, causing various health problems such as rashes, otitis externa, and Legionnaires' disease.