While Britney Spears put her ex-husband Kevin Federline under a lot of fame-induced stress while they were an item, it's unlikely that she's the cause of his latest health hazard. Federline was rushed to the hospital on Monday (Jan. 23) after suffering a minor heart attack.

According to Zap2It, K-Fed was hustling his way through a football challenge, Aussie style, when he started to experience chest pain. Federline, who fathered Brit's two active little boys, is currently Down Under trying to drop some extra weight as a part of the weightloss show 'Excess Baggage.'

A spokesperson for Australia's Channel Nine said that though their medics treated K-Fed on site, they had him taken to the hospital via ambulance anyhow. "He did his challenge, which was running and catching the ball, then ... He reported chest pains and a racing heart," the rep reports. "Obviously on this show we have a lot of paramedics on standby and they treated him for the first signs of a minor cardiac arrest, called an ambulance and had him taken to hospital."

The 33-year-old D-list star has struggled with his weight quite a bit since the Britney breakup and even participated on the show 'Celebrity Fit Club' back in 2010. Federline reportedly still in the Australian hospital being closely monitored.