SHE may be 50 but Jennifer Aniston has the body of a woman half her age.
And the Friends star, who made her debut on Instagram last week, has now revealed the secret behind her fantastic figure - intermittent fasting.
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Jen says she uses the 16:8 fasting diet, which means she eats for eight hours of the day, while fasting for the remaining 16 hours.
She said: "I do intermittent fasting, so no food in the morning.
"I noticed a big difference in going without solid food for 16 hours."
Studies say the diet will help shed the pounds without causing you to starve yourself.
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Researchers found that those who followed the time-restricted eating diet consumed fewer calories, lost weight and had improvements in blood pressure.
It is also said to help reduce the risk of cancer and heart disease, lower cortisol levels (ie. eliminate stress) and reduce inflammation.
Jen previously admitted that she also likes to stayin shape with daily yoga, boxing, cardio and meditation sessions.
I do intermittent fasting, so no food in the morning. I noticed a big difference in going without solid food for 16 hours
She said:"I feel really beautiful when I finish a great workout.
"Because I've taken care of my body, my endorphins are going, my blood is pumping. I'm taking care of the one body I have.
"I have a spin bike, an elliptical bike and a treadmill and I do cardio for at least 20 minutes a day. Even that short burst makes a difference.
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"Of course I take days off. It's important to rest the body.
"I can go a whole week saying, 'I'm not going to work out'. Your body will tell you what it needs."
However, she says the key to staying in shape is happiness.
She added: "It's hard work, you know. You work out, you just take care of yourself and you exercise.
What is the 16:8 diet?
The 16:8 diet allows you to eat for eight hours of the day, while fasting for the remaining 16 hours.
Known as intermittent fasting, it is believed to be one of most popular dieting plans out there at the moment, and appears to be effective for most dieters.
It helps to keep to a healthy diet for the eight hours you can eat so as to get the most out of the plan.
The diet stems from the book 8 Hour Diet by author David Zinczenko and editor-in-chief of Mens Health Peter Moore.
They suggest that a longer fasting time between eating gives the body the time it needs to process the food and burn away extra fat stores.
This diet doesnt suggest you cram all your food into an eight-hour window.
Instead, it encourages the consumption of balanced foods that can burn fat and boost overall health.
Experts suggest dieters opt for lean meat, eggs, dairy, vegetables, nuts and beans each day during their eight hour window.
For the remaining 16 hours, dieters can consumer water, tea and coffee.
"You eat right, you sleep, you're happy.
"Happiness is the big key. My dad is 100 per cent Greek, he barely has a wrinkle.
"Neither did my grandmother, who was 95 when she died. My life is a happy life. It's a choice."
Jenniferused to moan that her bum wobbled, saying it "has a tendency to go right and left and I'd like it to go up".
But after hitting her half century, she has stopped putting so much pressure on herself and learned to love her body.
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She says: "When we're kids, we are constantly working out for smaller arms, a leaner butt, a flat tummy. Let it be. I can be a little soft."
Jen made the revelation about her 16:8 diet while speaking to Radio Times, alongside her The Morning Show co-star Reese Witherspoon.
And Reese admitted she turns to Jen for advice on health and fitness.
She added: "I just have a green juice and a coffee in the morning.
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"Jen knows so much about health and fitness that I always defer to her. Shes great at wellbeing advice."
Jen, who is best known for playing Rachel Green in Friends, managed to crash Instagram last week as she racked up 6.9million followers in less than 24 hours.
And the TV favourite, who has only uploaded four posts so far, now has a staggering 15.5million followers.
See more here:
Weight loss: Jennifer Aniston reveals intermittent fasting is key to her incredible figure at 50 - The Irish Sun
