If you stay in the tub for a few hours (or even minutes, if you don't have a lot of time), it can help you burn unwanted calories, according to one study. Staying in hot water can be compared to the positive effects of a 30-minute walk. It not only speeds up the burning of calories, but it also improves blood sugar levels.
How does this technique work?
A study by an exercise physiologist at Loughborough University in the United Kingdom found that men who showered in hot water or in a bathtub burned 140 calories. It has also been proven that hot water showers can lower high blood sugar levels more efficiently than exercise, which is especially useful for people with type 2 diabetes.
The key is time and temperature
here is the time and the temperature. The ideal would be to stay in the bathtub for one hour and the water temperature should be at a constant 40 ° C. The experiment was performed only on men, so women may respond differently and may not burn as many calories as men. The results depend on the weight and body type of the person and for those reasons, it can be difficult to predict the outcome.