Why day three drains your energy and how to push past it

By the time the third morning of the Bone Broth Diet rolls around, many Australians find themselves dragging through their brekkie and wondering whether the plan is really doing what it promised. The first two days usually bring a pleasant buzz — a sense of novelty, lighter meals, and the comforting ritual of sipping something warm before anyone else in the house is awake. Then suddenly, around hour 60, the fatigue rolls in too.

This is not a sign the plan is failing. It is one of the most predictable responses your body can have when you shift from a typical Western diet to one built around bone broth, gentle fasting windows, and mineral-dense whole foods. The body is adjusting its fuel systems, recalibrating hormones, and clearing stored waste.

Most importantly, the dip is short-lived. People who push through day three almost always report clearer energy, better sleep, and a flatter tummy by the close of the week. The trick is knowing what to expect, what to do about it, and how to keep the plan on track when life keeps moving around you.

The metabolic crossroads at day three

Around the 60-hour mark, the body finishes burning through its last easily accessible glycogen stores and begins leaning more heavily on fat for fuel. This transition, sometimes called the metabolic flip, is a real physiological event. Insulin has dropped, glucagon has risen, and the liver is being asked to produce ketones at a rate it has not practised in a while.

For many people, this shows up as a low-grade headache, a tired slump by mid-afternoon, or the sudden urge to nap on the train home. None of it is dangerous. In most people, it eases within 24 to 48 hours as the liver becomes more efficient at producing ketones and the brain adapts to using them as cleaner fuel.

Blood sugar swings and the carb taper

The Bone Broth Diet intentionally reduces carbohydrate intake to nudge the body toward fat-burning. On day three, the pancreas is producing less insulin because there is less glucose to manage. The muscles, meanwhile, still expect their usual dose of carbs to fuel a morning walk along the coastal track or a quick gym session before heading into the office.

This mismatch creates the classic afternoon slump. A short adjustment period is normal. If you still feel unusually tired into day five or beyond, it usually means hydration, sleep, or mineral intake needs attention rather than a need for more food. Adding a pinch of good-quality sea salt to your morning broth, or sipping water with a little mineral mix, can help bridge the gap while the body catches up.

Hydration, electrolytes and the Aussie heat

Few things sabotage a new diet in Australia faster than underestimating the heat. Even in the southern states, a 32-degree arvo can quietly drain litres from the body without you noticing. The Bone Broth Diet already provides sodium and potassium through the broth, but when temperatures climb, you can outpace what the broth replaces.

For every hour spent outdoors — whether it is a walk through the botanic gardens or a trip across town — add an extra glass of water with a pinch of salt or a splash of coconut water. If your urine is darker than pale straw by mid-morning, you are behind. Travellers and shift workers should plan ahead; a long-haul flight from Perth to Sydney, or a double shift on your feet, can undo an otherwise perfect day.

Sleep quality when your routine shifts

Sleep often changes more dramatically than appetite during the first week of any new eating pattern. Some people feel sleepy earlier in the evening and wake before the alarm; others find themselves wide awake at 2 am watching the ceiling fan spin. The reason is partly hormonal — lower insulin and higher growth hormone release can shift the body's preferred sleep window.

Aim for at least seven hours of sleep during the first week. Dim the lights an hour earlier, skip the late-night scroll, and consider a small magnesium supplement if leg twitches appear. Better sleep alone will sharpen the next day and make the remaining days of the 21-day plan feel noticeably smoother.

Movement that restores rather than drains

The instinct when energy dips is to push harder at the gym. On day three, that is the wrong move. The body is already working harder than usual behind the scenes, switching fuel sources and clearing metabolites. A heavy session can deepen the slump rather than relieve it.

Swap the long run or heavy lifts for something restorative. A gentle walk along the Tan in Melbourne, an easy swim at your local pool, or a yoga flow in the loungeroom is enough to keep blood moving without adding recovery debt. By day five or six, when ketones are flowing more freely, longer sessions feel natural again. Trust the rhythm of the plan rather than fighting it.

Mindset anchors to carry you forward

The third day is as much a mental hurdle as a physical one. The novelty has worn off, the results are not yet visible, and the mind starts scanning for reasons to quit. This is the moment where most Australians abandon a new health plan — not because the plan failed, but because the inner narrative shifted from "I can do this" to "Maybe this is not for me."

Reframing the day is the single most powerful tool. Treat fatigue as confirmation that the body is doing what it was designed to do, and track small wins like looser waistbands, clearer skin, and fewer afternoon cravings. There is a useful parallel in how lasting habits are built: just as a multi-unit growth strategy replicates one strong idea across an entire network to accelerate results, repeating one solid morning routine across each day of the plan builds far more progress than any single heroic effort could.

Practical habits to carry through day three

• Start each morning with a warm mug of bone broth before coffee.
• Add a pinch of sea salt or a splash of electrolyte mix to your water if you feel light-headed.
• Keep your walk or workout gentle and under 30 minutes until energy returns.
• Prioritise an earlier bedtime for the rest of the first week.
• Skip the second coffee after midday and replace it with another broth or herbal tea.
• Track how you feel in a simple journal so you can see progress your eyes miss.
• Tell a friend or partner about your plan so social pressure supports you.

Give your body the reset it has been asking for. The 21-day plan is laid out in plain language inside Dr. Kellyann's Bone Broth Diet, along with shopping lists, recipes, and a day-by-day structure that makes the third-day slump a small bend in the road rather than a roadblock. Pick up your copy today and turn that midweek dip into the moment everything starts to shift.