Former Republican hopeful Marco Rubio unleashed a late-night Twitter tirade that included sarcastic tweets about his gym routine.
The rant followed a story in the Washington Post that suggested he was unsure of his political future, citing "people close to him."
A "longtime friend" says Rubio is "betwixt" about whether to work out his "chest or legs tomorrow at gym," Rubio tweeted, mocking the article.
"According to source who knows his cousins, wife's dentist, Rubio could do cardio instead," he added.
Rubio suspended his campaign on March 15 after failing to win his home state of Florida.