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After experiencing an irregular heartbeat, the "Feeling Good" crooner was diagnosed with a syndrome triggered by excessive alcohol consumption.
"They call it holiday heart syndrome," he told Britain's Daily Mail Weekend magazine. "I noticed that when I had a few drinks I could feel my heart race. A lot of people get it, but my problem was that I hated it. I could feel it."
While the situation is scary, Michael was assured that with a little extra caution, he can live a regular life.
"The doctors said, 'Mike, you don't even have to think about it. People live with this all their lives -- it's normal,'" he said. "I was being a hypochondriac, but I was really sensitive to it. If you're partying too much, any kind of stimulant can have an affect on taking your heart out of rhythm."
While his heartbeat was "zapped" back into rhythm, the singer is taking his doctors' advice and cutting back on the booze.
"It's fixed," he said. "But I also don't party as much as I did. I don't drink very often. Alcohol is the worst stimulant for it."