The Sirtfood Diet Explained: How It Activates Your 'Skinny Gene'
The plan Adele reportedly followed — the science, the foods, and whether it actually works.
Read Article →7 science-backed calculators in one place. Know your numbers, build your plan, and achieve real, lasting results — just like Adele did.
Free Tools
Everything you need to plan, track, and achieve your weight loss goals — no sign-up, no cost, ever.
Calculate your Body Mass Index and find your healthy weight range.
Find out exactly how many calories you need to lose, maintain, or gain weight using the Mifflin-St Jeor equation — the most accurate formula available.
Once you know your calorie target, find the right protein, carb, and fat split for your goal.
See exactly when you'll reach your goal weight — with milestone dates along the way.
Uses the US Navy Method to estimate body fat from simple tape measurements — no expensive equipment needed.
Get a complete 7-day meal plan personalised to your calorie target and dietary preference — printable and shareable.
Proper hydration boosts metabolism by up to 30% and is one of the most overlooked weight loss tools. Find your personal daily target.
How It Works
Use the BMI and TDEE calculators to find your baseline. This is the foundation of every successful weight loss plan.
Set your macro targets, generate your personalised meal plan, and use the timeline tool to set a real goal date.
Return weekly to update your numbers. As you lose weight, your calorie needs change — stay ahead of it.
Why This Works
The methods that drove one of music's most talked-about transformations — explained.
Adele reportedly followed the Sirtfood Diet, which activates "skinny gene" pathways through polyphenol-rich foods like kale, blueberries, and green tea. Our meal plans incorporate these principles.
Learn more →Adele's trainer Camila Goodis used circuit training and Pilates to build lean muscle mass — which raises resting metabolism and reshapes the body even at the same weight.
Learn more →Poor sleep raises cortisol and ghrelin (the hunger hormone), making fat loss much harder. Optimising sleep is a critical, often overlooked pillar of weight management.
Learn more →Drinking 500ml of water before meals has been shown to increase weight loss by 44% over 12 weeks. It also naturally suppresses appetite and boosts metabolism temporarily.
Learn more →Adele's transformation took several years — not weeks. Sustainable weight loss requires building habits, not following a crash diet. Our tools are designed to support the long game.
Learn more →You don't need to count every calorie forever — but understanding your numbers is essential for making informed food choices. Our free tools make this fast and easy.
Learn more →Real People, Real Results
"I used the TDEE calculator and meal plan generator together. Lost 28 lbs in 14 weeks — and I actually understand WHY it's working now. The best free tool I've found online."
"The weight loss timeline calculator was eye-opening. Seeing my goal date printed out — September 14th! — made it feel real and achievable for the first time."
"I come back every week to recalculate. As my weight drops, my calorie needs change — this site updates everything in seconds. Adele inspired me; this site gave me the roadmap."
Common Questions
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The plan Adele reportedly followed — the science, the foods, and whether it actually works.
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