You’ve almost no doubt heard someone say, “Just wait. Your metabolism will tank in your 30s!” But, what does this mean? And what is metabolism anyway? Marla Ahlgrimm offers up answers below.
Q: What is metabolism?
Marla Ahlgrimm: Metabolism is the natural process your body uses to convert food into energy. The more efficient your metabolism, the faster your food is converted. This also means that you can eat more calories and do less physical activity without gaining a significant amount of weight.