Sit and soak.

As a good strengthening and tone effects are having of a full cold baths for 30 sec till minute, as on a half first day, but if you are sleeping after,dong for night. As in hypertension, edema, blood circulation, low immunity, obesity, are good helping sitting baths cold, as level for water on  30 cm.
As for 7 minutes, as with wetted sponge or hand in bath rub from a top till down are kidneys sides and belly.

in tachicarditis as good are leg baths cold, on a second half day, till elbow.

in migraine, insomnia, lungs damages, kidneys, urea, bowel, liver, pancreas, gall add in pot is cold water till calves,as step in her for 6 minutres, as not stay, move.

in bad blood circulation as when are chilling hands, legs, for two times/day for minutes put in cold baths are hands till elbow and legs are till knee.

in tired eyes, vision bad as on a table put a plate with a cold water at 20C, and put in her face for 15 sec, open eyes keeping, as on next day for 15 sec keep face in water, rise head, rest for half minutes,again face put in water for 15 sec, for a third day face put in water for three times for four till 4 times, leading till 7, as useful doing in beginning cataract.