Hi Rose Ferguson , we have our live today - How to maintain your body and metabolic health in the longterm. 

I have a naturally thin body type with supposedly a fast metabolism? I've been told in the past to eat 5 smaller meals throughout the day instead of 3, and then on other occasions told to double the amount per serving to gain weight. 

Now that I eat healthy, have very little UPF and only the occasional bubbles I do find it harder to gain weight. 

Q1 - What is a fast metabolism?

Q2 - How best to gain healthy weight as we age - is it about weight training?

Thank you 😀