November 29/London/Daily Maily -- According to researchers, cranberry-flavoured Aspire burns 209 calories within three hours of drinking it. Scientists at Leeds Metropolitan University found that when caffeine and green tea were combined with amino acid and ginger, there was a thermogenic effect , whereby the body generates more heat to digest food and temporarily stimulates metabolism.
However, the drink was tested on only 20 subjects -- 11 men and nine women.