Simply put, a faster metabolism means that the molecules in the body are moving faster.  A faster metabolism means a leaner, stronger body and a stronger immune system.  Building a faster metabolism, like all things important, takes time and effort.  It is a few big things like short, intense exercise and eating frequently.  It is also a myriad of small things, like what we eat.  Here are a few metabolism boosting foods:

• lean meat
• whey protein
• eggs
• grapefruit
• almonds
• coconut oil

For more ways to build metabolism:

https://fitmaniaforlife.com/13-surprising-ways-to-improve-your-metabolism/