A dozen middle-age and elderly men were game enough for a Dutch gym's invitation to work out nude. But they were vastly outnumbered by the dozens of journalists watching them lift, row and cycle in the buff. "We already had naked swimming ... but a gym, that's unique," said one white-haired bespectacled man, who gave only his first name, Henk. "It's spectacular!" he said, as he pedaled away.Apparently, the rumor is there will be a nudist day at a Wal-mart near here. Can anyone say, LenTV?