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? A.
making sure that she targets the groups in the upper body and works these groups out every day
B.
concentrating on the muscle groups that will strengthen only her arms and legs for her job and doing this workout every day
C.
working out her arms on Monday, her legs on Wednesday, and her stomach on Friday.
D.
making sure there is variety, at least 48 hours of rest for specific muscle groups, and that each target group gets a workout three times a week