ET spoke to Kaysar Ridha from seasons six and seven of 'Big Brother' about being chosen to re-enter the house, for the second time as an all-star. Kaysar recalled being part of the historic Pressure Cooker competition that took place during season six. The challenge was the show's longest-lasting competition clocking in at 14 hours and 37 minutes. Kaysar also shared his thoughts on playing in the middle of a global pandemic. The two-hour season premiere of Big Brother airs Wednesday at 9 p.m. ETPT on CBS. Following the premiere, the series will air Sundays and Wednesdays at 8 p.m. ETPT, and Thursdays at 8 p.m. ET, featuring the live eviction show hosted by Julie Chen-Moonves.