Miley Cyrus Hits the Recording Studio After Split with Patrick Schwarzenegger

Miley Cyrus isn't lying in bed with a pint of Häagen-Dazs in the wake of her split with Patrick Schwarzenegger – the singer is working it out. 
Cyrus, 22, shared a pic on Instagram on Tuesday that showed her in the recording studio. 
"Eating veggies in the stu," she captioned the pic, adding the hashtags "#wilsondiet #notarealdiet #asinbrian" in reference to Beach Boys front man Brian Wilson. 
A source confirmed to PEOPLE on Monday that Cyrus and Schwarzenegger, 21, had gone their separate ways after dating for five months.