Next to the rarely true excuse, “Of course I´m not too heavy… I just have heavy bones,” the couch potato gene could be the perfect excuse for those who find exercise something of a chore. It may not be an attitude problem: ‘I’m not lazy, it’s my genes!’

In investigating couch potatoes scientists have discovered why some of us have fun working out for hours while others lack energy and can barely summon the get-up-and-go to reach for the TV remote.

They believe they have identified the genes that produce an enzyme in our muscles during work outs called AMP kinase More >