Hard at Work, Britney Spears Needs a Breather!

After reportedly spending a day working in a dance studio, Britney Spears stopped in to a convenience store in Studio City, Calif., Thursday for an energy boost (below, left). 

Hopefully, that "boost" was just Red Bull, but didn't include any vodka. Otherwise, our girl Britney could be in for another random display of exhibitionism (leading to some tremendous nude pictures), or another sudden bout of "tiredness" akin to her New Year's debacle.

Recently, the singer has been more play than business - as we're sure you know. So much so that she's come under fire from Kevin Federline (really) for not being around their kids, Sean Preston and Jayden James, enough.

Instead, she's been hitting the club scene with new guy Isaac Cohen (above, right) or whom she recently bought some sexy lingerie. Despite rumors that they broke up, the couple appears to be going strong.