Why aren't there any BUFF guys in MLB like 10 yrs ago?

10 yrs ago there were tons of buff guys in mlb.(bagwell, big mac, juan gonzalez, pudge, sammy sosa, piazza, etc.. nowadays other then Gabe Kapler i can't name another...Sluggers like Ryan Howard & Prince Fielder bench press donuts instead of iron, has the steroid testing cut down on the baseball players trying to get buff?