Jennifer Aniston, 50, and Reese Witherspoon, 43, reveal the secret behind their incredible figures

Many celebrities maintain their looks with expensive skin treatments and even surgery.

But Jennifer Aniston and Reese Witherspoon owe their vitality and youthfulness to a far more disciplined approach – fasting.

Looking almost like they did at the start of their careers more than 20 years ago, the Hollywood stars have now revealed their secret.

Tricks of the trade: Jennifer Aniston and Reese Witherspoon owe their vitality and youthfulness to fasting

Jennifer, 50, and mother-of-three Reese, 43, stick to a regime of 16-hour fasts, daily green juices and gruelling workouts six days a week.

Happily, they allow themselves a ‘cheat day’ once a week to have what they like when they like – which in Jennifer’s case turns out to be celery juice.

Asked about how they start their days, they told Radio Times they’d never heard of a fry-up and never even eat breakfast.

‘I do intermittent fasting, so no food in the morning,’ former Friends star Jennifer said. ‘I noticed a big difference in going without solid food for 16 hours.’

Going green: Reese has long been an advocate of juicing

Going green: Reese has long been an advocate of juicing

Secrets: Jennifer, 50, and mother-of-three Reese, 43, stick to a regime of 16-hour fasts, daily green juices and gruelling workouts six days a week

Secrets: Jennifer, 50, and mother-of-three Reese, 43, stick to a regime of 16-hour fasts, daily green juices and gruelling workouts six days a week

Regimen: Jennifer said she aims for five workouts every week, and even when she’s not fasting starts the day with a celery juice, followed by meditation and a workout

Regimen: Jennifer said she aims for five workouts every week, and even when she’s not fasting starts the day with a celery juice, followed by meditation and a workout

Reese added: ‘I just have a green juice and a coffee in the morning.

‘Jen knows so much about health and fitness that I always defer to her. She’s great at wellbeing advice.’

To help her ‘thrive’, Jennifer doesn’t wake until 9am, while Reese – who found fame in the 1999 film Legally Blonde – has it harder, rising at 5.30am with her son Tennessee, seven.

She then has a workout at 7.30am, adding: ‘I probably do that six days a week.’

Jennifer said she aims for five workouts every week, and even when she’s not fasting starts the day with a celery juice, followed by meditation and a workout.

Reese added: ‘I just have a green juice and a coffee in the morning. Jen knows so much about health and fitness that I always defer to her. She’s great at wellbeing advice'

Reese added: ‘I just have a green juice and a coffee in the morning. Jen knows so much about health and fitness that I always defer to her. She’s great at wellbeing advice’

However, the so-called 16:8 diet may not be for everyone, according to dietician Susie Burrell, who said following such a restrictive regime was ‘easier said than done’.

The 16:8 diet advocates fasting for 16 hours and eating freely for the remaining eight hours, typically between 10am and 6pm.

In addition to weight loss, intermittent fasting is believed to improve blood sugar control, boost brain function and increase life expectancy. But Miss Burrell said: ‘Rather than dinner at 8pm and not eating until 12pm the next day, you will get the best results if you eat dinner by 5pm to 6pm and not eat until 9am or 10am so you still reap the metabolic benefits of consuming calories in the first half of the day.’

Out now: The interview can be read in this week's Radio Times

Out now: The interview can be read in this week’s Radio Times

The Hollywood actresses are starring in the new TV drama The Morning Show, which will be screened on Apple TV+ next month. The series, for which they are also co-producers, is about rivalry and sexual harassment on a TV news programme.

The co-stars are keen to highlight how things have changed for actresses since the MeToo movement took off. However, despite starting on the hit series Friends in 1994, when she was just 25, Jennifer said she had not been a victim herself. She added: ‘I have had a pretty easy time.’

Reese said: ‘We are entering a time where female voices are important in Hollywood, because women see things in a different way.

‘Jen and I probably wouldn’t have been able to make this show ten years ago. But people are taking us more seriously as creators and producers.’ 

Read more at DailyMail.co.uk