Looking fit and sounding happy, John Stamos announced he is back from rehab. “I’m back!” the “Full House” actor wrote Friday on Twitter. "Took a month to take care of things. Healthy. Feeling grateful for the love & support of family & friends.” To prove how healthy he is feeling, the tweet was accompanied by a photo of him hitting a punching bag. Last month Stamos, 51, was arrested in Beverly Hills for driving under the influence. He was nabbed after many drivers called the Beverly Hills Police Department to report a drunken driver. Police stopped him at Canon Drive and South Santa Monica Blvd. Stamos was then taken to a hospital because police thought there could have been a medical concern. He was later cited and checked into to rehab. Stamos is due to report at the Los Angeles County courthouse on Sept. 12. The actor has a busy schedule with the much-hyped reboot of the sitcom that made him a star and other roles in the works. Stamos, Bob Saget, Dave Coulier and Lori Loughlin have signed on for the 13-episode reboot, “Fuller House,” slated for Netflix in 2016. He is also starring in Fox’s upcoming sitcom, “Grandfathered.” No other details were released about his stay in rehab.