Tom Brady works out in California at UCLA's campus Friday

FOXBORO -- While Tom Brady reportedly hasn't yet attended a Patriots offseason workout session at Gillette Stadium, it doesn't mean he's not working.

Brady spent some time Friday working out on UCLA's campus, according to the UCLA football Twitter account.

Stage 2 of the Patriots' offseason workout program begins next week, which is when on-field football activity starts, so it will be interesting to see if Brady attends.

The -- putting in work at the Wasserman Football Center!#TomBrady | #OnlyAtUCLA pic.twitter.com/EQFUB69va1