Mick Jagger keeps in shape through ballet

Former Rolling Stone's lead vocalist, Mick Jagger, apparently keeps fit by performing ballet.

The 69-year-old singer's six-day-a-week fitness regime includes yoga and Pilates, the Daily Star reported.

The rocker also practices kickboxing, running, swimming and cycling to keep his 28-inch waist.

Jagger asserted to the publication that he trains but does not go crazy.