Steam dilates skin capillaries, increasing blood flow to the epidermis. Increased blood flow promotes the transport of nutrients and oxygen, aiding skin metabolism and waste removal, thus improving skin tone to some extent and making the skin appear firmer and more radiant.

While the external dimensions may vary slightly between brands, most 3-person spa hot tubs fall within the following range: • Length: 1800 – 2000 mm • Width: 1200 – 1500 mm • Height: 700 – 850 mm

Based on medical advice and the physical characteristics of the elderly, it is generally not recommended for people over 70 years old to stay in a steam sauna room for more than 10–15 minutes.

This means that neither land-based nor water-based exercises, including activities in a swim spa tub, can "only reduce belly fat." However, they can indirectly positively impact abdominal fat reduction by increasing overall energy expenditure, activating core muscles, and improving movement patterns.

When you soak in a spa hot tub at 37–40°C, your body undergoes a series of physiological responses: Warmth promotes vasodilation (slightly lowers blood pressure) Warm water has a natural vasodilatory effect, usually causing a slight decrease in blood pressure.

In fact, it's generally not recommended to leave the water in the spa hot tub if it won't be used for an extended period in winter. The reason is clear: when the temperature drops below freezing, pipes can burst, joints can break, filters can rupture, and even the outer shell of the hot tub can crack.