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Recent 
 suggests taking a dip in very cold water for 
 hours a week is good for our health. Researchers from the University of Central Lancashire in the U.K. looked into the 
 of cold-water immersion therapy. They found it could have positive effects on our 
, sleep quality, and overall well-being. The researchers studied the 
 on the 
 of 13 people. The participants were dunked in 10ºC water for 10 minutes, three times a week, for four weeks. Study 
 Dr Robert Allan said the cold-water 
 could "help with a 
 of positive physiological and psychological changes linked to improvements in 
 general health and well-being".