Three forms of nutrition restriction.

• Time restriction (when you eat).
• Caloric restriction (how much you eat).
• Diet restriction (what you eat).

Crude approach

• Technical macro-nutrients approach.  (“FoundMyFitness — Peter Attia“)
  • Proteins: up to level needed to maintain muscle mass.
  • Carbs: down to level that produces acceptable insulin, avoids glucose spikes.
  • Fat to complete and make up the amount needed to maintain proper BMR.
• Subject to your goals.
  • Health, weight gain or loss, endurance, strength, etc.
• Some rules of thumb to consider or play around with.
  • Proteins: 1 gram of protein per 1 pound of body weight.
  • Vegetables: “eight fists”.