A South Melbourne gym, Rare Breeds, suffered significant fire damage after a second incident in as many nights, prompting an arson investigation. The gym was severely damaged in the latest blaze, following a previous attack the night before. Authorities are treating the incidents as suspicious, given the short timeframe between them. Rare Breeds gym has a history of prior controversies, though details remain limited. The gym’s future is uncertain as investigations continue and damage assessments are underway. Police are appealing for information regarding the fires and any potential witnesses.