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Cruise lines are continuously trying to find new ways to keep passengers entertained. From celebrities to popular guest speakers, the list continues to grow.

The most recent addition comes from Star Clipper. The line has recruited Madonna’s personal yoga guru to offer free classes on Royal Clipper’s two transatlantic crossings next year.

Christel Vollmer will join the ship’s 21-nights sailings departing 12 April from Bridgetown, Barbados to Rome and a 28-night sailing from Rome on 25 October.

She will be on board for 16 nights on each cruise, offering two daily sessions of Astanga yoga. The classes will take place on deck in the morning and a second session just before sunset.