There are knee lifts, a soundtrack and even a countdown in this new video broadcast on Venezuelan government TV.President Hugo Chavez, the star of the video, says he has embraced exercise and even offers up some insights."Healthy government. Healthy body. Health mind," Chavez says. Flanked by his cabinet, he marches and stretches and works to quiet concerns that his cancer is slowing him down.The 57-year-old president has already warned his political opponents not to count him out in next year's election.