Gb3 in Fresno to reopen gym pools for members starting Monday More services at Gb3 in Fresno will be available starting Monday, officials said in an email sent to gym members last week. KFSN Share: FRESNO, Calif. (KFSN) -- More services at Gb3 in Fresno will be available starting Monday, officials said in an email sent to gym members last week. The local gym has been open for indoor operation, violating California's tier system for reopening business. Fresno County is currently in the most restrict purple tier, which requires gyms to be open outdoors only. Officials said pools would reopen Monday. Members must wear masks near the water, and only one person is allowed in each pool lane.