Bollywood actor Hrithik Roshan celebrated his 52nd birthday, with social media abuzz with tributes. Known for his physique, his fitness regimen includes a four-day resistance training split focusing on different muscle groups weekly. His trainer emphasizes a balance of strength training, steady-state cardio, and functional drills to maintain agility and muscle mass. This approach is particularly notable given Roshan's history of back and knee injuries, requiring a smart training strategy.