Lipolysis, Ketosis, Blood Sugar Levels, Insulin and Their Role in Endurance Energy

I recently viewed a video by a doctor named Peter Attia who presented a great summary on how the body reacts to various forms of sugar during endurance exercise and how the body can transition to using fat for energy. He endorses a substance called UCAN which I have no experience with but his explanation as to why it is beneficial is awesome! The gist of his message is:

• The simpler the sugar (glucose most simple) the greater the spike in blood sugar and insulin levels.
• Spiked insulin impedes lipolysis and causes dips in blood sugar which makes you feel like crap and eat more sugar causing a downward spiral
• Lipolysis is the most effictive form of energy in the body. 

I was also recently introduced to his blog entitled The Eating Academy where he lays out ketosis and how we can tap into fat stores. This is an area that I feel has a lot of potential in performance during endurance activities.