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Long-term hot tub soaking may cause blood pressure fluctuations, especially in winter when the temperature difference is large. The warm water temperature causes blood vessels to dilate, and long-term soaking may cause a slight drop in blood pressure.

Baking soda is not the only substance that can increase the alkalinity of hot tub water. There are other chemicals on the market that are specifically designed for water quality maintenance, such as alkalinity increasers. These products usually contain sodium carbonate (Na₂CO₃), also known as soda ash.

If the hot tub is not shut down, the pump is still running, and the filter is in a working state driven by water pressure, and removing the filter rashly may cause the following problems: 1. Water gushing 2. Equipment damage 3. Safety risks

Calculate the amount of antifreeze required based on the capacity of the hot tub and the use ratio of antifreeze. For example, if the capacity of the hot tub is 300 gallons, and one quart of antifreeze is required for every gallon of water (a 1:4 ratio), then the total amount of antifreeze required is 300 quarts, or about 75 gallons.

If you have a small family or want to enjoy the fun of a hot tub with friends, a medium-sized hot tub is a good choice. This type of bathtub can accommodate 3 to 6 people at the same time, has stronger massage functions and a variety of nozzle layouts, suitable for deep relaxation and hydrotherapy.

1. Create a comfortable environment Control light and lighting Reduce noise interference Adjust ambient temperature 2. Equipment adjustment and maintenance Adjust the strength and direction of the nozzle Adjust water temperature Maintain water quality 3. Adjust personal usage habits Set usage time and frequency Add aromatherapy Preparation before massage

If multiple people use a hot tub every day, contaminants such as body oils, sweat, and cosmetics will increase significantly in the water, which will accelerate the consumption of bromine. Frequent use means that bromine needs to be added more frequently to maintain its disinfecting effect.

People who are not suitable for outdoor hot tubs: 1. People with cardiovascular diseases 2. People with respiratory diseases 3. People with diabetes 4. Pregnant women 5. People with sensitive skin or skin diseases 6. People with poor body temperature regulation 7. Alcoholics and drug users 8. People with weak immune systems 9. People who are overly tired or dehydrated

The water temperature of outdoor whirlpool bathtubs is usually maintained between 37 and 40 degrees Celsius, which is a suitable temperature for microbial growth. If the water quality is not well managed, the bacteria may multiply faster, increasing the risk of infection.

It is recommended to leave at least 2 to 3 feet (about 60 to 90 cm) of movement space around the hot tub so that users can comfortably enter and exit the tub. If the hot tub measures 7 feet x 7 feet, the area of ​​the terrace should be at least 9 feet x 9 feet (about 2.7 meters x 2.7 meters).

Ways to burn 1,000 calories in a swim spa: 1. High-intensity interval training (1 minute of high-intensity all-out swimming + low-intensity easy swimming, repeated 20 times), 2. Long-term aerobic exercise (1 hour of continuous swimming + water running + aerobics), 3. Combined with strength training.

Large hot tubs usually refer to those hot tubs that can accommodate multiple people at the same time, such as 6-person and 7-person hot tubs. This type of tub not only provides more space for use, but also has more functions.