Nupur Jolly on Instagram: "Kate Winslet quietly did something incredible while filming Avatar The Way of Water. She held her breath underwater for 7 minutes and 15 seconds during a scene which earned her the Guinness World Record for the longest on screen underwater breath hold by a lead actor. That broke the previous record held by Tom Cruise who managed about six minutes while filming Mission Impossible Rogue Nation. No stunt double. No shortcuts. Just intense training discipline and grit. Som