Jennifer Aniston recently revealed some of the things she took for granted in her younger years. The 'Friends' alum weighed in on everything during her most recent interview with InStyle magazine.

She began by emphasizing the advantages of getting enough sleep and admitted, "Sleep is extraordinary. It's beautiful. But, boy did I take it for granted when we were young. When you're younger, you kind of take it for granted. You think, 'I can survive on three-to-five hours of sleep and I feel great,' and then, all of a sudden, it just starts not to feel great and your performance isn't as up to par as it should be." 

'You realize a lack of sleep leads to all sorts of health issues'

The 54-year-old gradually understood how her lack of sleep was impacting not only her body, complexion, and famously lustrous hair but also her work and thinking process. In order to raise awareness and educate people about sleep issues, she collaborated on the Seize the Night and Day campaign with the pharmaceutical company, Idorsia. She began to understand the importance of sleep after learning more about what it does for the body.

The 'We're the Millers' actress added, "All of your body is getting all the work done that it put itself through during the day. You realize a lack of sleep leads to all sorts of health issues. It's a deficit you won't ever get back." Hence, on days she fails to get enough sleep, "I don't push myself so hard [in a workout] because that will lead to an injury when your body and your brain aren't fully rested. I just try to do my best and just figure out everything possible that will ensure a good night's sleep."

Actress Reese Witherspoon looks up to Jennifer Aniston for wellness advice

The Emmy-winning actress claimed that her 'The Morning Show' co-star Reese Witherspoon frequently turns to her for wellness guidance. "Reese loves to come to me and say, 'What's the latest? What do you got for me?' Usually [I] tell her my new tips and tricks."