Kevin Federline has had a bit of a rough time filming the weight-loss reality show Excess Baggage in Australia. Britney Spears' ex-husband collapsed on Monday after experiencing chest pains while participating in a challenge with an Australian football team. Ther 33-year-old was taken by ambulance to Mt. Druitt Hospital, where he was treated for symptoms of minor cardiac arrest, according to the Australian Associated Press. Test results showed that he had not suffered a heart attack, contrary to reports from some media outlets.