Martina wants to increase her strength in her lower and upper body to help her in her new waitressing job. Right now, Martina lifts weights once a week and includes exercises that work out all muscle groups. Which change in her workout would be BEST to help her meet her goals?

To build strength safely, Martina should train the muscles used for her job while allowing them time to recover. A workout plan with variety, at least 48 hours of rest before working the same muscle groups again, and regular training for each target group supports both lower- and upper-body strength. Working the same muscles every day, as choices A and B suggest, does not provide enough recovery; choice C leaves some groups undertrained.

AI-written and checked against the verified answer.