For women over 40
After 40, every diet quietly steals muscle.
The scale says it's working. Muscle says otherwise. Take the 60-second quiz to see where things really stand.
60 seconds · Free · See your score before you decide a thing
4.6 on the App Store · 100,000+ women · PhD-backed muscle science
The number nobody told you to track
You've counted calories for 20 years. So why do you feel weaker?
You're smaller — but softer, and not as strong. That isn't a willpower problem. After 40, your body loses muscle and bone faster — menopause speeds it up, and every diet you do takes a little more of it.
And this was never about looking toned. It's about carrying the shopping, getting off the floor with the grandkids, walking into your 70s strong and steady — still you. Muscle protects all of it. Lose it quietly now, and you feel it later.
And no — this isn't about the gym, or lifting heavy. It's about keeping what you've already got. The first step is simply knowing where you stand.
The science — from a PhD
The research, in four numbers.
lower heart-disease risk in people with the most muscle.
not body fat, is what predicts how long you live.
of the weight you lose — dieting or on weight-loss medication — can be muscle.
of your muscle can quietly disappear between your 20s and your 80s.
Drawn from clinical-nutrition research shared by a PhD researcher in the Turtle community. Educational estimate, not medical advice.
Your number
LeanShield™ — the first score that protects your muscle
It's a muscle-protection score from 1 to 100. It reads your training, your protein and your habits and tells you straight — Protected, Caution, or At-Risk — so you can lose the fat without losing the strength that keeps you upright, independent and you. In 60 seconds, you'll have your estimate.
How it works
Three steps. Sixty seconds.
Take the quiz
Eight quick questions about your age, hormones, training and goals.
Get your score
Your estimated LeanShield muscle-protection score, and what it means.
Protect your muscle
A plan built for women 40+ inside Turtle — try it for £1 for 30 days.
What's your muscle-loss risk?
In 60 seconds you'll see your estimated LeanShield score, your band — Protected, Caution or At-Risk — what's quietly costing you muscle, and the simplest way to protect it.
Free · 60 seconds · No download needed to see your score