There's a good overview of his views expressed in this manifold thread.

Basically:

• Caloric restriction works, however it impedes his productivity ("ability to think").
• Exercise isn't effective in promoting weight loss or reducing weight gain due to compensatory metabolic throttling during non-exercise times
• His fat metabolism is poor, because his fat cells are inclined to leach glucose and triglycerides from his bloodstream to sustain themselves rather than be net contributors, and the effect is that muscle loss makes up the difference, leading to unfavourabl... (read more)