Please note. Dr. Sinclair is 51 years old. As you watch [1], really let that sink in.
So 6 years later he looks like 10 years younger. That's the most mind-blowing part.
Thing is, you estimate age mostly based on someone's skin, and with clothes on, that means face. It's very superficial. If you've got good skin, you'll look younger. There's a ton of products that will help. There are plenty of celebrities that are older but look younger. (Did you know Cher is 74?)
The most interesting part is really the health benefits: less degradation of various bodily functions, more stamina, better quality of life.