Sometimes in life, you really can't beat the old stuff. Old friends, old tunes, old movies - we love them all. And when it comes to working out, it seems we're partial to going retro too: indoor step ...

Add Yahoo as a preferred source to see more of our stories on Google. Created (and demoed) by Zocchi and the other trainers behind the fitness app Centr, here is a ten-step, no-equipment workout that ...