“You’ve got to psyche yourself up,” says Richard Scrivener, 31, an implausibly muscular health, fitness and nutrition instructor at a gym in Islington, north London. “You’ve got to give it all you’ve got, push yourself, hammer it. When I fire up the music and we’re pumped up, and I’m screaming at you, the roof will lift off. There’ll be so much energy
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Tabata: is this workout worth the pain? (Sunday Telegraph) | Jake …