Before starting a new workout, Cal should ask himself: "What is my current fitness level and does this new workout align with my capabilities?"
Understanding his current fitness level helps him choose a workout routine that is appropriate for his strength, endurance, and mobility, thereby reducing the risk of overexertion or strain that could lead to injuries. Additionally, considering factors like any pre-existing injuries or health conditions is also crucial. It may also be beneficial for him to consult with a healthcare professional or a certified trainer for personalized advice.