How 'American Ninja Warrior's' Season 15 Obstacle Course Is Going To 'Raise The Stakes' (Exclusive)
Arnold Schwarzenegger's son proves once again he's following in his dad's bodybuilding footsteps – even in sweltering heat! Joseph Baena didn't let scorching temperatures derail his workout this week, pumping iron even as thermometers topped 100 degrees in Southern California. The 23-year-old showed off his efforts – and bulging biceps! – in a shirtless snap on his Instagram story. Though they can both hold their own in the weight room, exercise doesn't have to be a total sweatfest for Joseph or Arnold. The father-son duo spent quality time together near the beach recently, riding bikes in Santa Monica, Calif., with hoodies on to block the crisp ocean breeze!