In the rainy season in Japan, you tend to feel dull.
It's not only because of the shady weather with humid, but also, your body that has less chance to get sweat.
When you don't get sweat, your body keeps old water - as the result, that can cause anorexia, dyspepsia, and diarrhea.
So, it is important to remove your old body water from your body and drink enough water.
To do so, the the 3 things are recommended.
1. Keep your body warm in the air conditioned room because your body doesn't get sweat in cool/cold temperature.
2. Have a foods and drinks with a diuretic effect, such as, green tea, tomatoes, cucumbers, short-neck clam, white gourd-melon, red beans.
Foods with perspiration effect, such as ginger, green onion, coriander, shiso, peppermint.
3. Do exercise.
The rainy season continues until the middle of the July, so keep your body healthy.
Reference (in Japanese)
http://www.kotubankyosei-iyashiya.com/health/tsuyutaisaku/
It's not only because of the shady weather with humid, but also, your body that has less chance to get sweat.
When you don't get sweat, your body keeps old water - as the result, that can cause anorexia, dyspepsia, and diarrhea.
So, it is important to remove your old body water from your body and drink enough water.
To do so, the the 3 things are recommended.
1. Keep your body warm in the air conditioned room because your body doesn't get sweat in cool/cold temperature.
2. Have a foods and drinks with a diuretic effect, such as, green tea, tomatoes, cucumbers, short-neck clam, white gourd-melon, red beans.
Foods with perspiration effect, such as ginger, green onion, coriander, shiso, peppermint.
3. Do exercise.
The rainy season continues until the middle of the July, so keep your body healthy.
Reference (in Japanese)
http://www.kotubankyosei-iyashiya.com/health/tsuyutaisaku/