How to "undo" saturated fats /reset tolerance?

[jet9]

When i go lower fat (lots of fruit, seafood, shellfish, poultry diet) for 2-3 days and then add ~60g of suet (to same diet) it hits me like rocket fuel, i have LOTS of energy (mental & physical) that day. But next day 1) fruits loose their stimulating/energy giving power 2)~60g suet won't work as well or even will make me tired.

Ideally i would like to have 60g suet with my breakfast, enjoy the benefits till ~3-4pm, and then "undo" saturated fat so next day i will have great day again. Fasting & lemon water somewhat work, but not enough.

 

[paymanz]

Thats a lot of fat isn't it? Even if its good type of fat.

My guess is at first it gives you huge calorie surplus and makes you energetic but then your body adjust and become insulin resistant so you don't feel good on high carb diet the next day.