KEY POINTS:
He has been rocking for over 40 years and now Roger Daltrey has revealed his secret - a jelly-like fungus.
The Who frontman, 62, says Kombucha, tipped 2000 years ago to give warriors energy in battle, keeps him going. Most commonly taken as a yeast and bacteria tea, fans say the brown and slimy fungus detoxifies, purifies and protects the immune system.