Marcy should not do it. Supplements don't make you lose weight, they make you lose fat, something your body needs. Excersising would be way healthier for her than supplements.
Answer:
The immune system is a complex network of cells and proteins that defends the body against infection. The immune system keeps a record of every germ (microbe) it has ever defeated so it can recognise and destroy the microbe quickly if it enters the body again.
Explanation:
A measure of your cardiorespiratory endurance tells a fitness professional: Your aerobic fitness, or how efficiently your heart is working.
