We drink too much? And what does that do with our bodies? Cat Kerkhofs (29) and her sister Lyn (31) search for answers in their first own program for FIVE: ‘Tipsy’. Before they drink for five weeks at least two glasses per day and they should not drinks refuse. “After one week I had been vomiting. That promises,” laughs Kat in The Latest News. In ‘Perfect’ was of Karen Damen’s challenge to her body is perfectly in balance. The sisters Kerkhofs do exactly the opposite: they experience firsthand how alcohol your body afflicts.