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WATCH: Charles Tillman discusses Bears opener and his 65-mile trek across Lake Michigan

Beyonce was the catalyst in Charles Tillman and Jacob Beckley’s successful completion of their 65-mile, 25-hour trek across Lake Michigan.

‘Single Ladies’ provided both entertainment and energy to the duo in the midnight hours of their journey.

“He’s part of the Beyhive,” Tillman said of his rowing partner. “He’s Beyonce’s No. 1 fan. We sang the documentary. We sang that whole album, twice. All night.”

Tillman and Beckley took on the challenge to raise money for pediatric cancer research and also to support families affected by pediatric cancer. They named the cause Row4Kids and in the end the duo raised more than $250,000.