Is it true that chewing ice cubes, drinking coffee or drinking green tea will increase your metabolism and lead to weight loss?
Not really. Coffee and tea contain caffeine which may increase your heart rate by a minimal amount therefore burning a miniscule number of calories. Chewing ice cubes produces the same effect only in the opposite direction. The ice chills the body so a miniscule number of calories are generated to try and maintain the body’s temperature. What you have read is just media hype meant to promote the mistaken notion that there is an easy way to lose weight without real lifestyle changes. If you want to lose weight, move more and eat less.