F45 Training adds Gunnar Peterson, celebrity trainer to Tom Brady and the Kardashians, as chief of athletics

F45 Training Holdings Inc. FXLV, +7.51% announced Tuesday that Gunnar Peterson, a celebrity trainer who has worked with Tom Brady, the Kardashians, Mike Tyson and others, as chief of athletics. Peterson has already designed “an exclusive ascending weight, pyramid-style resistance workout” that will launch in April. F45 stock was up 6.3% in Tuesday trading after the news, and has rallied 20.5% over the past month. The S&P 500 index SPX, +0.70% is down 3.8% for the last month.