Đi tắm hơi. Tập thể dục. Mặc đồ giữ nhiệt. Tìm hiểu rủi ro và chi phí.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
One of the most straightforward ways to quickly lose water weight is to simply sweat it out. This is a short-term technique that is commonly used by boxers and other fighters to shed extra pounds before a weigh-in. You can make yourself sweat in any number of ways, but arguably the most time-efficient way would be to spend some time in a sauna. Here you will quickly sweat and drop water weight.  Because saunas can be intense, you should only sit in them for short periods of 15 minutes to half an