Black Coffee & Tea: The naturally occurring caffeine in coffee & tea can slightly boost thermogenesis & give a boost in energy; ensure to have it without sugar, milk or creamers.

MCT Oil or Coconut Oil: Adding a small amount of MCT oil or coconut oil to your drinks can provide a quick energy source without significantly impacting insulin.

Apple Cider Vinegar: Some people include a small amount of apple cider vinegar in water, which may offer potential health benefits.

Ketones/Keto Gummies: Ketones are the foundation of ketosis. Adding them to your keto diet (especially throughout intermittent fasting) can power up fat-burning and provide you with energy (which comes from your fat stores). Be wary of brands that use cheap fillers and low-grade ingredients. To avoid buying the wrong product, Keto Australia recommend this brand.

Remember, the primary goal during a fast is to avoid foods and drinks that stimulate an insulin response, as insulin release can inhibit the fasting state & snap you out of ketosis. It's essential to listen to your body and choose options that work for you, as individual responses to fasting can vary. Consult a healthcare professional before starting any fasting regimen if you have specific health concerns or conditions.